History of philosophy
Encyclopedia
The history of philosophy
Philosophy
Philosophy is the study of general and fundamental problems, such as those connected with existence, knowledge, values, reason, mind, and language. Philosophy is distinguished from other ways of addressing such problems by its critical, generally systematic approach and its reliance on rational...

is the study of philosophical ideas and concepts through time. Issues specifically related to history of philosophy might include (but are not limited to): How can changes in philosophy be accounted for historically? What drives the development of thought in its historical context? To what degree can philosophical texts from prior historical eras even be understood today?

All cultures — be they prehistoric, medieval, or modern
Modernism
Modernism, in its broadest definition, is modern thought, character, or practice. More specifically, the term describes the modernist movement, its set of cultural tendencies and array of associated cultural movements, originally arising from wide-scale and far-reaching changes to Western society...

; Eastern
Eastern Hemisphere
The Eastern Hemisphere, also Eastern hemisphere or eastern hemisphere, is a geographical term for the half of the Earth that is east of the Prime Meridian and west of 180° longitude. It is also used to refer to Europe, Asia, Africa, and Australasia, vis-à-vis the Western Hemisphere, which includes...

, Western
Western Hemisphere
The Western Hemisphere or western hemisphere is mainly used as a geographical term for the half of the Earth that lies west of the Prime Meridian and east of the Antimeridian , the other half being called the Eastern Hemisphere.In this sense, the western hemisphere consists of the western portions...

, religious or secular — have had their own unique schools of philosophy, arrived at through both inheritance and through independent discovery. Such theories have grown from different premise
Premise
Premise can refer to:* Premise, a claim that is a reason for, or an objection against, some other claim as part of an argument...

s and approaches, examples of which include (but are not limited to) rationalism
Rationalism
In epistemology and in its modern sense, rationalism is "any view appealing to reason as a source of knowledge or justification" . In more technical terms, it is a method or a theory "in which the criterion of the truth is not sensory but intellectual and deductive"...

 (theories arrived at through logic
Logic
In philosophy, Logic is the formal systematic study of the principles of valid inference and correct reasoning. Logic is used in most intellectual activities, but is studied primarily in the disciplines of philosophy, mathematics, semantics, and computer science...

), empiricism
Empiricism
Empiricism is a theory of knowledge that asserts that knowledge comes only or primarily via sensory experience. One of several views of epistemology, the study of human knowledge, along with rationalism, idealism and historicism, empiricism emphasizes the role of experience and evidence,...

 (theories arrived at through observation), and even through leaps of faith
Leap of faith
A leap of faith, in its most commonly used meaning, is the act of believing in or accepting something intangible or unprovable, or without empirical evidence...

, hope and inheritance (such as the supernatural
Supernatural
The supernatural or is that which is not subject to the laws of nature, or more figuratively, that which is said to exist above and beyond nature...

ist philosophies and religion
Religion
Religion is a collection of cultural systems, belief systems, and worldviews that establishes symbols that relate humanity to spirituality and, sometimes, to moral values. Many religions have narratives, symbols, traditions and sacred histories that are intended to give meaning to life or to...

s).

History of philosophy seeks to catalogue and classify such development. The goal is to understand the development of philosophical ideas through time.

Western philosophy

Western philosophy
Western philosophy
Western philosophy is the philosophical thought and work of the Western or Occidental world, as distinct from Eastern or Oriental philosophies and the varieties of indigenous philosophies....

 has a long history, conventionally divided into four large eras - the Ancient, Medieval, Modern, and Contemporary. The Ancient era runs through the fall of Rome and includes the Greek philosophers such as Plato
Plato
Plato , was a Classical Greek philosopher, mathematician, student of Socrates, writer of philosophical dialogues, and founder of the Academy in Athens, the first institution of higher learning in the Western world. Along with his mentor, Socrates, and his student, Aristotle, Plato helped to lay the...

 and Aristotle
Aristotle
Aristotle was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. His writings cover many subjects, including physics, metaphysics, poetry, theater, music, logic, rhetoric, linguistics, politics, government, ethics, biology, and zoology...

. The Medieval period runs until roughly the late 15th century and the Renaissance
Renaissance
The Renaissance was a cultural movement that spanned roughly the 14th to the 17th century, beginning in Italy in the Late Middle Ages and later spreading to the rest of Europe. The term is also used more loosely to refer to the historical era, but since the changes of the Renaissance were not...

. The "Modern" is a word with more varied use, which includes everything from Post-Medieval through the specific period up to the 20th century. Contemporary philosophy encompasses the philosophical developments of the 20th century up to the present day.

Ancient philosophy

Western Philosophy is generally said to begin in the Greek cities of western Asia Minor (Ionia) with Thales
Thales
Thales of Miletus was a pre-Socratic Greek philosopher from Miletus in Asia Minor, and one of the Seven Sages of Greece. Many, most notably Aristotle, regard him as the first philosopher in the Greek tradition...

 of Miletus
Miletus
Miletus was an ancient Greek city on the western coast of Anatolia , near the mouth of the Maeander River in ancient Caria...

, who was active around 585 B.C. and left us the opaque dictum, "all is water." His most noted students were Anaximenes of Miletus
Anaximenes of Miletus
Anaximenes of Miletus was an Archaic Greek Pre-Socratic philosopher active in the latter half of the 6th century BC. One of the three Milesian philosophers, he is identified as a younger friend or student of Anaximander. Anaximenes, like others in his school of thought, practiced material monism...

 ("all is air") and Anaximander
Anaximander
Anaximander was a pre-Socratic Greek philosopher who lived in Miletus, a city of Ionia; Milet in modern Turkey. He belonged to the Milesian school and learned the teachings of his master Thales...

 (all is apeiron
Apeiron (cosmology)
Apeiron is a Greek word meaning unlimited, infinite or indefinite from ἀ- a-, "without" and πεῖραρ peirar, "end, limit", the Ionic Greek form of πέρας peras, "end, limit, boundary".-Apeiron as an origin:...

).

Other thinkers and schools appeared throughout Greece over the next couple of centuries. Among the most important were Heraclitus
Heraclitus
Heraclitus of Ephesus was a pre-Socratic Greek philosopher, a native of the Greek city Ephesus, Ionia, on the coast of Asia Minor. He was of distinguished parentage. Little is known about his early life and education, but he regarded himself as self-taught and a pioneer of wisdom...

 ("all is fire", all is chaotic and transitory), Anaxagoras
Anaxagoras
Anaxagoras was a Pre-Socratic Greek philosopher. Born in Clazomenae in Asia Minor, Anaxagoras was the first philosopher to bring philosophy from Ionia to Athens. He attempted to give a scientific account of eclipses, meteors, rainbows, and the sun, which he described as a fiery mass larger than...

 (reality is so ordered that it must be in all respects governed by mind), the Pluralists
Pluralism (philosophy)
Pluralism is a term used in philosophy, meaning "doctrine of multiplicity", often used in opposition to monism and dualism . The term has different connotations in metaphysics and epistemology...

 and Atomists (the world is composite of innumerable interacting parts), the Eleatics Parmenides
Parmenides
Parmenides of Elea was an ancient Greek philosopher born in Elea, a Greek city on the southern coast of Italy. He was the founder of the Eleatic school of philosophy. The single known work of Parmenides is a poem, On Nature, which has survived only in fragmentary form. In this poem, Parmenides...

 and Zeno
Zeno of Elea
Zeno of Elea was a pre-Socratic Greek philosopher of southern Italy and a member of the Eleatic School founded by Parmenides. Aristotle called him the inventor of the dialectic. He is best known for his paradoxes, which Bertrand Russell has described as "immeasurably subtle and profound".- Life...

 (all is One and change is impossible), the Sophists (became known, perhaps unjustly, for claiming that truth was no more than opinion and for teaching people to argue fallaciously to prove whatever conclusions they wished). This whole movement gradually became more concentrated in Athens
History of Athens
Athens is one of the oldest named cities in the world, having been continuously inhabited for at least 7000 years. Situated in southern Europe, Athens became the leading city of Ancient Greece in the first millennium BCE and its cultural achievements during the 5th century BCE laid the foundations...

, which had become the dominant city-state in Greece
Greece
Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

.

There is considerable discussion about why Athenian culture encouraged philosophy, but a popular theory says that it occurred because Athens had a direct democracy
Democracy
Democracy is generally defined as a form of government in which all adult citizens have an equal say in the decisions that affect their lives. Ideally, this includes equal participation in the proposal, development and passage of legislation into law...

. It is known from Plato's writings that many sophists maintained schools of debate, were respected members of society, and were well paid by their students. Orators influenced Athenian history, possibly even causing its failure (See Battle of Lade
Battle of Lade
The Battle of Lade was a naval battle which occurred during the Ionian Revolt, in 494 BC. It was fought between an alliance of the Ionian cities and the Persian Empire of Darius the Great, and resulted in a decisive victory for the Persians which all but ended the revolt.The Ionian Revolt was...

). Another theory explains the birth of philosophical debate in Athens with the presence of a slave labor workforce which performed the necessary functions that would otherwise have consumed the time of the free male citizenry. Freed from working in the fields or other manual economic activities, they were able to participate in the assemblies of Athens and spend long periods in discussions on popular philosophical questions. Students of Sophists needed to acquire the skills of oration in order to influence the Athenian Assembly and thereby increase respect and wealth. In response, the subjects and methods of debate became highly developed by the Sophists.

The key figure in transforming Greek philosophy into a unified and continuous project - the one still being pursued today - is Socrates
Socrates
Socrates was a classical Greek Athenian philosopher. Credited as one of the founders of Western philosophy, he is an enigmatic figure known chiefly through the accounts of later classical writers, especially the writings of his students Plato and Xenophon, and the plays of his contemporary ...

, who studied under several Sophists. It is said that following a visit to the Oracle of Delphi he spent much of his life questioning anyone in Athens who would engage him, in order to disprove the oracular prophecy that there would be no man wiser than Socrates. Through these live dialogues, he examined common but critical concepts that lacked clear or concrete definitions, such as beauty and truth, and the virtues of piety, wisdom, temperance, courage, and justice. Socrates' awareness of his own ignorance allowed him to discover his errors as well as the errors of those who claimed knowledge based upon falsifiable or unclear precepts and beliefs. He wrote nothing, but inspired many disciples, including many sons of prominent Athenian citizens (including Plato
Plato
Plato , was a Classical Greek philosopher, mathematician, student of Socrates, writer of philosophical dialogues, and founder of the Academy in Athens, the first institution of higher learning in the Western world. Along with his mentor, Socrates, and his student, Aristotle, Plato helped to lay the...

), which led to his trial and execution in 399 B.C. on the charge that his philosophy and sophistry were undermining the youth, piety
Piety
In spiritual terminology, piety is a virtue that can mean religious devotion, spirituality, or a combination of both. A common element in most conceptions of piety is humility.- Etymology :...

, and moral fiber of the city. He was offered a chance to flee from his fate but chose to remain in Athens, abide by his principles, and drink the poison hemlock
Conium
Conium is a genus of two species of highly poisonous perennial herbaceous flowering plants in the family Apiaceae, native to Europe and the Mediterranean region as Conium maculatum, and to southern Africa as Conium chaerophylloides....

.

Socrates' most important student was Plato, who founded the Academy
Academy
An academy is an institution of higher learning, research, or honorary membership.The name traces back to Plato's school of philosophy, founded approximately 385 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and skill, north of Athens, Greece. In the western world academia is the...

 of Athens and wrote a number of dialogues, which applied the Socratic method
Socratic method
The Socratic method , named after the classical Greek philosopher Socrates, is a form of inquiry and debate between individuals with opposing viewpoints based on asking and answering questions to stimulate critical thinking and to illuminate ideas...

 of inquiry to examine philosophical problems. Some central ideas of Plato's dialogues are the Theory of Forms, i.e., that the mind is imbued with an innate capacity to understand and contemplate concepts from a higher order preeminent world, concepts more real, permanent, and universal than or representative of the things of this world, which are only changing and temporal; the idea of the immortal soul being superior to the body; the idea of evil as simple ignorance of truth; that true knowledge leads to true virtue; that art is subordinate to moral purpose; and that the society of the city-state
City-state
A city-state is an independent or autonomous entity whose territory consists of a city which is not administered as a part of another local government.-Historical city-states:...

 should be governed by a merit class of propertyless philosopher kings, with no permanent wives or paternity rights over their children, and be protected by an athletically gifted, honorable, duty bound military class. In the later dialogues Socrates figures less prominently, but Plato had previously woven his own thoughts into some of Socrates' words. Interestingly, in his most famous work, The Republic, Plato critiques democracy, condemns tyranny, and proposes a three tiered merit based structure of society, with workers, guardians and philosophers, in an equal relationship, where no innocents would ever be put to death again, citing the philosophers' relentless love of truth and knowledge of the forms or ideals, concern for general welfare and lack of propertied interest as causes for their being suited to govern.

Plato's most outstanding student was Aristotle
Aristotle
Aristotle was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. His writings cover many subjects, including physics, metaphysics, poetry, theater, music, logic, rhetoric, linguistics, politics, government, ethics, biology, and zoology...

, perhaps the first truly systematic philosopher. Aristotelian logic was the first type of logic
Logic
In philosophy, Logic is the formal systematic study of the principles of valid inference and correct reasoning. Logic is used in most intellectual activities, but is studied primarily in the disciplines of philosophy, mathematics, semantics, and computer science...

 to attempt to categorize every valid syllogism
Syllogism
A syllogism is a kind of logical argument in which one proposition is inferred from two or more others of a certain form...

. A syllogism is a form of argument that is guaranteed to be accepted, because it is known (by all educated persons) to be valid
Validity
In logic, argument is valid if and only if its conclusion is entailed by its premises, a formula is valid if and only if it is true under every interpretation, and an argument form is valid if and only if every argument of that logical form is valid....

. A crucial assumption in Aristotelian logic is that it has to be about real objects. Two of Aristotle's syllogisms are invalid to modern eyes. For example, "All A are B. All A are C. Therefore, some B are C." This syllogism fails if set A is empty, but there are real members of set B. In Aristotle's syllogistic logic you could say this, because his logic should only be used for things that really exist ("no empty classes")

The application of Aristotelian logic is preceded by having the student memorize a rather large set of syllogisms. The memorization proceeded from diagrams, or learning a key sentence, with the first letter of each word reminding the student of the names of the syllogisms.

Each syllogism had a name, for example: "Modus Ponens" had the form of "If A is true, then B is true. A is true, therefore B is true."

Most university students of logic memorized Aristotle's 19 syllogisms of two subjects, permitting them to validly connect a subject and object. A few geniuses developed systems with three subjects, or described a way of elaborating the rules of three subjects.

Medieval philosophy

Medieval philosophy was greatly concerned with Christianity, the nature of God and the application of Aristotle
Aristotle
Aristotle was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. His writings cover many subjects, including physics, metaphysics, poetry, theater, music, logic, rhetoric, linguistics, politics, government, ethics, biology, and zoology...

's logic
Term logic
In philosophy, term logic, also known as traditional logic or aristotelian logic, is a loose name for the way of doing logic that began with Aristotle and that was dominant until the advent of modern predicate logic in the late nineteenth century...

 and thought to every area of life. Attempts were made to reconcile these three things by means of scholasticism
Scholasticism
Scholasticism is a method of critical thought which dominated teaching by the academics of medieval universities in Europe from about 1100–1500, and a program of employing that method in articulating and defending orthodoxy in an increasingly pluralistic context...

. One continuing interest in this time was to prove the existence of God, through logic alone, if possible. The point of this exercise was not so much to justify belief in God, since in the view of medieval Christianity this was self-evident, but to make classical philosophy, with its extra-biblical pagan origins, respectable in a Christian context.

One early effort was the cosmological argument
Cosmological argument
The cosmological argument is an argument for the existence of a First Cause to the universe, and by extension is often used as an argument for the existence of an "unconditioned" or "supreme" being, usually then identified as God...

, conventionally attributed to Thomas Aquinas
Thomas Aquinas
Thomas Aquinas, O.P. , also Thomas of Aquin or Aquino, was an Italian Dominican priest of the Catholic Church, and an immensely influential philosopher and theologian in the tradition of scholasticism, known as Doctor Angelicus, Doctor Communis, or Doctor Universalis...

. The argument roughly is that everything that exists has a cause. But since there could not be an infinite chain of causes back into the past, there must have been an uncaused "first cause." This is God. Aquinas also adapted this argument to prove the goodness of God. Everything has some goodness, and the cause of each thing is better than the thing caused. Therefore, the first cause is the best possible thing. Similar arguments were used to prove God's power and uniqueness.

Another important argument for proof of the existence of God was the ontological argument
Ontological argument
The ontological argument for the existence of God is an a priori argument for the existence of God. The ontological argument was first proposed by the eleventh-century monk Anselm of Canterbury, who defined God as the greatest possible being we can conceive...

, advanced by St. Anselm. Basically, it says that God has all possible good features. Existence is good, and therefore God has it, and therefore exists. This argument has been used in different forms by philosophers from Descartes forward.

As well as Aquinas, other important names from the medieval period include Duns Scotus
Duns Scotus
Blessed John Duns Scotus, O.F.M. was one of the more important theologians and philosophers of the High Middle Ages. He was nicknamed Doctor Subtilis for his penetrating and subtle manner of thought....

 and Pierre Abélard.

The definition of the word "philosophy" in English has changed over the centuries. In medieval times, any research outside the fields of theology
Theology
Theology is the systematic and rational study of religion and its influences and of the nature of religious truths, or the learned profession acquired by completing specialized training in religious studies, usually at a university or school of divinity or seminary.-Definition:Augustine of Hippo...

 or medicine
Medicine
Medicine is the science and art of healing. It encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness....

 was called "philosophy", hence the Philosophical Transactions of the Royal Society
Philosophical Transactions of the Royal Society
The Philosophical Transactions of the Royal Society is a scientific journal published by the Royal Society of London. It was established in 1665, making it the first journal in the world exclusively devoted to science, and it has remained in continuous publication ever since, making it the world's...

 is a scientific journal dating from 1665, the Doctor of Philosophy
Doctor of Philosophy
Doctor of Philosophy, abbreviated as Ph.D., PhD, D.Phil., or DPhil , in English-speaking countries, is a postgraduate academic degree awarded by universities...

 (Ph.D.) degree covers a wide range of subjects, and the Cambridge Philosophical Society
Cambridge Philosophical Society
The Cambridge Philosophical Society is a scientific society at University of Cambridge. It was founded in 1819. The name derives from the medieval use of the word philosophy to denote any research undertaken outside the fields of theology and medicine...

 is actually concerned with what we would now call science
Science
Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe...

 and not modern philosophy.

Renaissance philosophy

Contemporary philosophical historiography emphasizes a great "gap" between Middle Ages and Modern thought. And often this "gap" is used as a mean to characterize the meaning of the word "modern" used in "modern philosophy".

However, an historical perspective (and philosophical ones less interested into a single solid "gap") emphasizes the existence of a long period of transition between the teologically driven centuries (running up the XIII or XIV Centuries) and the rationalists-empiricists debates.

As well as for the figurative arts, music, vernacular languages and literatures, and the Christian religion, philosophy was greatly renewed in Renaissance
Renaissance
The Renaissance was a cultural movement that spanned roughly the 14th to the 17th century, beginning in Italy in the Late Middle Ages and later spreading to the rest of Europe. The term is also used more loosely to refer to the historical era, but since the changes of the Renaissance were not...

. Renaissance, spread into Europe from Italy and in particular from Norther Italy and Tuscany, also by the means of architecture, arts and literature, inaugurated new philosophical problems, and permitted a new era of thought, independent from the Roman Church.

If most (if not all) of medieval philosophers were priests and monks, early and late Renaissance philosophers were a more heterogeneous population, including rhetors, magicians and astrologues, early empirical scientist, poets, philologists. The new era put together all these souls in the search for the human specificity. The study of humanae litterae overcame that of divinae litterae, and opened the way for modern skepticism and science.

Many philosophers from the Renaissance are today read and remembered, even if often not categorized into a single category, but spread into modern philosophy (if they fit, especially if oriented towards empiricism and rationalism, like Galileo Galilei
Galileo Galilei
Galileo Galilei , was an Italian physicist, mathematician, astronomer, and philosopher who played a major role in the Scientific Revolution. His achievements include improvements to the telescope and consequent astronomical observations and support for Copernicanism...

 or Machiavelli) or instead put back into the Middle Ages, especially if heavily influenced by esoteric traditions (like Giovanni Pico della Mirandola
Giovanni Pico della Mirandola
Count Giovanni Pico della Mirandola was an Italian Renaissance philosopher. He is famed for the events of 1486, when at the age of 23, he proposed to defend 900 theses on religion, philosophy, natural philosophy and magic against all comers, for which he wrote the famous Oration on the Dignity of...

, Marsilio Ficino
Marsilio Ficino
Marsilio Ficino was one of the most influential humanist philosophers of the early Italian Renaissance, an astrologer, a reviver of Neoplatonism who was in touch with every major academic thinker and writer of his day, and the first translator of Plato's complete extant works into Latin...

 and even Nicholas of Cusa
Nicholas of Cusa
Nicholas of Kues , also referred to as Nicolaus Cusanus and Nicholas of Cusa, was a cardinal of the Catholic Church from Germany , a philosopher, theologian, jurist, mathematician, and an astronomer. He is widely considered one of the great geniuses and polymaths of the 15th century...

 and Giordano Bruno
Giordano Bruno
Giordano Bruno , born Filippo Bruno, was an Italian Dominican friar, philosopher, mathematician and astronomer. His cosmological theories went beyond the Copernican model in proposing that the Sun was essentially a star, and moreover, that the universe contained an infinite number of inhabited...

). Only a few, relatively "innocuous" philosophers are often fully recognized as Renaissance philosophers: Montaigne, Tommaso Campanella
Tommaso Campanella
Tommaso Campanella OP , baptized Giovanni Domenico Campanella, was an Italian philosopher, theologian, astrologer, and poet.-Biography:...

, Telesius among them.

Modern philosophy

As with many periodizations, there are multiple current usages for the term "Modern Philosophy" that exist in practice. One usage is to date modern philosophy from the "Age of Reason
Age of reason
Age of reason may refer to:* 17th-century philosophy, as a successor of the Renaissance and a predecessor to the Age of Enlightenment* Age of Enlightenment in its long form of 1600-1800* The Age of Reason, a book by Thomas Paine...

", where systematic philosophy became common, excluding Erasmus and Machiavelli
Niccolò Machiavelli
Niccolò di Bernardo dei Machiavelli was an Italian historian, philosopher, humanist, and writer based in Florence during the Renaissance. He is one of the main founders of modern political science. He was a diplomat, political philosopher, playwright, and a civil servant of the Florentine Republic...

 as "modern philosophers". Another is to date it, the way the entire larger modern period is dated, from the Renaissance
Renaissance
The Renaissance was a cultural movement that spanned roughly the 14th to the 17th century, beginning in Italy in the Late Middle Ages and later spreading to the rest of Europe. The term is also used more loosely to refer to the historical era, but since the changes of the Renaissance were not...

. In some usages, "Modern Philosophy" ended in 1800, with the rise of Hegelianism and Idealism. There is also the lumpers/splitters problem, namely that some works split philosophy into more periods than others: one author might feel a strong need to differentiate between "The Age of Reason" or "Early Modern Philosophers" and "The Enlightenment"; another author might write from the perspective that 1600-1800 is essentially one continuous evolution, and therefore a single period. Wikipedia's philosophy section therefore hews more closely to centuries as a means of avoiding long discussions over periods, but it is important to note the variety of practice that occurs.

A broad overview would then have Erasmus, Francis Bacon
Francis Bacon
Francis Bacon, 1st Viscount St Albans, KC was an English philosopher, statesman, scientist, lawyer, jurist, author and pioneer of the scientific method. He served both as Attorney General and Lord Chancellor of England...

, Niccolò Machiavelli
Niccolò Machiavelli
Niccolò di Bernardo dei Machiavelli was an Italian historian, philosopher, humanist, and writer based in Florence during the Renaissance. He is one of the main founders of modern political science. He was a diplomat, political philosopher, playwright, and a civil servant of the Florentine Republic...

, and Galileo Galilei
Galileo Galilei
Galileo Galilei , was an Italian physicist, mathematician, astronomer, and philosopher who played a major role in the Scientific Revolution. His achievements include improvements to the telescope and consequent astronomical observations and support for Copernicanism...

 represent the rise of empiricism and humanism in place of scholastic tradition. 17th-century philosophy
17th-century philosophy
17th-century philosophy in the Western world is generally regarded as being the start of modern philosophy, and a departure from the medieval approach, especially Scholasticism....

 is dominated by the need to organize philosophy on rational, skeptical, logical and axiomatic grounds, such as the work of René Descartes
René Descartes
René Descartes ; was a French philosopher and writer who spent most of his adult life in the Dutch Republic. He has been dubbed the 'Father of Modern Philosophy', and much subsequent Western philosophy is a response to his writings, which are studied closely to this day...

, Blaise Pascal
Blaise Pascal
Blaise Pascal , was a French mathematician, physicist, inventor, writer and Catholic philosopher. He was a child prodigy who was educated by his father, a tax collector in Rouen...

, and Thomas Hobbes
Thomas Hobbes
Thomas Hobbes of Malmesbury , in some older texts Thomas Hobbs of Malmsbury, was an English philosopher, best known today for his work on political philosophy...

. This type of philosophy attempts to integrate religious belief into philosophical frameworks, and, often to combat atheism or other skeptical beliefs, by adopting the idea of material reality, and the dualism
Dualism
Dualism denotes a state of two parts. The term 'dualism' was originally coined to denote co-eternal binary opposition, a meaning that is preserved in metaphysical and philosophical duality discourse but has been diluted in general or common usages. Dualism can refer to moral dualism, Dualism (from...

 between spirit and material. The extension, and reaction, against this would be the monism of George Berkeley
George Berkeley
George Berkeley , also known as Bishop Berkeley , was an Irish philosopher whose primary achievement was the advancement of a theory he called "immaterialism"...

 (idealism) and Benedict de Spinoza (dual aspect theory
Double-aspect theory
In the philosophy of mind, double-aspect theory is the view that the mental and the physical are two aspects of the same substance. The theory's relationship to neutral monism is ill-defined, but one proffered distinction says that whereas neutral monism allows the context of a given group of...

). It was during this time period that the empiricism was developed as an alternative to skepticism by John Locke
John Locke
John Locke FRS , widely known as the Father of Liberalism, was an English philosopher and physician regarded as one of the most influential of Enlightenment thinkers. Considered one of the first of the British empiricists, following the tradition of Francis Bacon, he is equally important to social...

, George Berkeley
George Berkeley
George Berkeley , also known as Bishop Berkeley , was an Irish philosopher whose primary achievement was the advancement of a theory he called "immaterialism"...

 and others. It should be mentioned that John Locke
John Locke
John Locke FRS , widely known as the Father of Liberalism, was an English philosopher and physician regarded as one of the most influential of Enlightenment thinkers. Considered one of the first of the British empiricists, following the tradition of Francis Bacon, he is equally important to social...

, Thomas Hobbes
Thomas Hobbes
Thomas Hobbes of Malmesbury , in some older texts Thomas Hobbs of Malmsbury, was an English philosopher, best known today for his work on political philosophy...

 and Edmund Burke
Edmund Burke
Edmund Burke PC was an Irish statesman, author, orator, political theorist and philosopher who, after moving to England, served for many years in the House of Commons of Great Britain as a member of the Whig party....

 developed their well known political philosophies during this time, as well.

The 18th-century philosophy article deals with the period often called the early part of "The Enlightenment" in the shorter form of the word, and centers on the rise of systematic empiricism, following after Sir Isaac Newton's natural philosophy. Thus Diderot, Voltaire
Voltaire
François-Marie Arouet , better known by the pen name Voltaire , was a French Enlightenment writer, historian and philosopher famous for his wit and for his advocacy of civil liberties, including freedom of religion, free trade and separation of church and state...

, Rousseau, Montesquieu, Kant
KANT
KANT is a computer algebra system for mathematicians interested in algebraic number theory, performing sophisticated computations in algebraic number fields, in global function fields, and in local fields. KASH is the associated command line interface...

 and the political philosophies embodied by and influencing the American Revolution
American Revolution
The American Revolution was the political upheaval during the last half of the 18th century in which thirteen colonies in North America joined together to break free from the British Empire, combining to become the United States of America...

 and American Enlightenment
American Enlightenment
The American Enlightenment is the intellectual thriving period in America in the mid-to-late 18th century, especially as it relates to American Revolution on the one hand and the European Enlightenment on the other...

 are part of The Enlightenment. Other prominent philosophers of this time period were David Hume
David Hume
David Hume was a Scottish philosopher, historian, economist, and essayist, known especially for his philosophical empiricism and skepticism. He was one of the most important figures in the history of Western philosophy and the Scottish Enlightenment...

 and Adam Smith
Adam Smith
Adam Smith was a Scottish social philosopher and a pioneer of political economy. One of the key figures of the Scottish Enlightenment, Smith is the author of The Theory of Moral Sentiments and An Inquiry into the Nature and Causes of the Wealth of Nations...

, who, along with Francis Hutcheson
Francis Hutcheson (philosopher)
Francis Hutcheson was a philosopher born in Ireland to a family of Scottish Presbyterians who became one of the founding fathers of the Scottish Enlightenment....

, were also the primary philosophers of the Scottish Enlightenment
Scottish Enlightenment
The Scottish Enlightenment was the period in 18th century Scotland characterised by an outpouring of intellectual and scientific accomplishments. By 1750, Scots were among the most literate citizens of Europe, with an estimated 75% level of literacy...

 and Thomas Paine
Thomas Paine
Thomas "Tom" Paine was an English author, pamphleteer, radical, inventor, intellectual, revolutionary, and one of the Founding Fathers of the United States...

 and Thomas Jefferson
Thomas Jefferson
Thomas Jefferson was the principal author of the United States Declaration of Independence and the Statute of Virginia for Religious Freedom , the third President of the United States and founder of the University of Virginia...

 who were philosophers of the American Enlightenment
American Enlightenment
The American Enlightenment is the intellectual thriving period in America in the mid-to-late 18th century, especially as it relates to American Revolution on the one hand and the European Enlightenment on the other...

.

The 19th century
19th-century philosophy
In the 19th century the philosophies of the Enlightenment began to have a dramatic effect, the landmark works of philosophers such as Immanuel Kant and Jean-Jacques Rousseau influencing a new generation of thinkers...

 took the radical notions of self-organization and intrinsic order from Goethe and Kantian metaphysics, and proceeded to produce a long elaboration on the tension between systematization and organic development. Foremost was the work of Hegel, whose Logic and Phenomenology of Spirit produced a "dialectical" framework for ordering of knowledge. The 19th century would also include Schopenhauer
Arthur Schopenhauer
Arthur Schopenhauer was a German philosopher known for his pessimism and philosophical clarity. At age 25, he published his doctoral dissertation, On the Fourfold Root of the Principle of Sufficient Reason, which examined the four separate manifestations of reason in the phenomenal...

's negation of the will. As with the 18th century, it would be developments in science that would arise from, and then challenge, philosophy: most importantly the work of Charles Darwin, which was based on the idea of organic self-regulation found in philosophers such as Adam Smith
Adam Smith
Adam Smith was a Scottish social philosopher and a pioneer of political economy. One of the key figures of the Scottish Enlightenment, Smith is the author of The Theory of Moral Sentiments and An Inquiry into the Nature and Causes of the Wealth of Nations...

, but fundamentally challenged established conceptions.

Also in the 19th century, the Danish philosopher Søren Kierkegaard
Søren Kierkegaard
Søren Aabye Kierkegaard was a Danish Christian philosopher, theologian and religious author. He was a critic of idealist intellectuals and philosophers of his time, such as Georg Wilhelm Friedrich Hegel, Friedrich Wilhelm Joseph Schelling and Karl Wilhelm Friedrich Schlegel...

 took philosophy in a new direction by focusing less on abstract concepts and more on what it means to be an existing individual. His work provided impetus for many 20th century philosophical movements, including existentialism
Existentialism
Existentialism is a term applied to a school of 19th- and 20th-century philosophers who, despite profound doctrinal differences, shared the belief that philosophical thinking begins with the human subject—not merely the thinking subject, but the acting, feeling, living human individual...

.

Contemporary philosophy

The 20th century
20th-century philosophy
20th-century philosophy saw the development of a number of new philosophical schools including logical positivism, analytic philosophy, phenomenology, existentialism and poststructuralism...

 deals with the upheavals produced by a series of conflicts within philosophical discourse over the basis of knowledge, with classical certainties overthrown, and new social, economic, scientific and logical problems. 20th century philosophy was set for a series of attempts to reform and preserve, and to alter or abolish, older knowledge systems. Seminal figures include Ludwig Wittgenstein
Ludwig Wittgenstein
Ludwig Josef Johann Wittgenstein was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language. He was professor in philosophy at the University of Cambridge from 1939 until 1947...

, Martin Heidegger
Martin Heidegger
Martin Heidegger was a German philosopher known for his existential and phenomenological explorations of the "question of Being."...

, Bertrand Russell
Bertrand Russell
Bertrand Arthur William Russell, 3rd Earl Russell, OM, FRS was a British philosopher, logician, mathematician, historian, and social critic. At various points in his life he considered himself a liberal, a socialist, and a pacifist, but he also admitted that he had never been any of these things...

, Jean-Paul Sartre
Jean-Paul Sartre
Jean-Paul Charles Aymard Sartre was a French existentialist philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic. He was one of the leading figures in 20th century French philosophy, particularly Marxism, and was one of the key figures in literary...

, and Edmund Husserl
Edmund Husserl
Edmund Gustav Albrecht Husserl was a philosopher and mathematician and the founder of the 20th century philosophical school of phenomenology. He broke with the positivist orientation of the science and philosophy of his day, yet he elaborated critiques of historicism and of psychologism in logic...

. Epistemology, the theory of knowledge, and its basis was a central concern, as seen from the work of Heidegger, Russell, Karl Popper
Karl Popper
Sir Karl Raimund Popper, CH FRS FBA was an Austro-British philosopher and a professor at the London School of Economics...

, and Claude Lévi-Strauss
Claude Lévi-Strauss
Claude Lévi-Strauss was a French anthropologist and ethnologist, and has been called, along with James George Frazer, the "father of modern anthropology"....

. Phenomenologically oriented metaphysics undergirded existentialism
Existentialism
Existentialism is a term applied to a school of 19th- and 20th-century philosophers who, despite profound doctrinal differences, shared the belief that philosophical thinking begins with the human subject—not merely the thinking subject, but the acting, feeling, living human individual...

 (Sartre, Maurice Merleau-Ponty
Maurice Merleau-Ponty
Maurice Merleau-Ponty was a French phenomenological philosopher, strongly influenced by Karl Marx, Edmund Husserl and Martin Heidegger in addition to being closely associated with Jean-Paul Sartre and Simone de Beauvoir...

, Albert Camus
Albert Camus
Albert Camus was a French author, journalist, and key philosopher of the 20th century. In 1949, Camus founded the Group for International Liaisons within the Revolutionary Union Movement, which was opposed to some tendencies of the Surrealist movement of André Breton.Camus was awarded the 1957...

) and finally poststructuralism (Gilles Deleuze
Gilles Deleuze
Gilles Deleuze , was a French philosopher who, from the early 1960s until his death, wrote influentially on philosophy, literature, film, and fine art. His most popular works were the two volumes of Capitalism and Schizophrenia: Anti-Oedipus and A Thousand Plateaus , both co-written with Félix...

, Jean-François Lyotard
Jean-François Lyotard
Jean-François Lyotard was a French philosopher and literary theorist. He is well known for his articulation of postmodernism after the late 1970s and the analysis of the impact of postmodernity on the human condition...

, Michel Foucault
Michel Foucault
Michel Foucault , born Paul-Michel Foucault , was a French philosopher, social theorist and historian of ideas...

, Jacques Derrida
Jacques Derrida
Jacques Derrida was a French philosopher, born in French Algeria. He developed the critical theory known as deconstruction and his work has been labeled as post-structuralism and associated with postmodern philosophy...

). Pragmatist
Pragmatism
Pragmatism is a philosophical tradition centered on the linking of practice and theory. It describes a process where theory is extracted from practice, and applied back to practice to form what is called intelligent practice...

 Richard Rorty
Richard Rorty
Richard McKay Rorty was an American philosopher. He had a long and diverse academic career, including positions as Stuart Professor of Philosophy at Princeton, Kenan Professor of Humanities at the University of Virginia, and Professor of Comparative Literature at Stanford University...

 has argued that these and other schools of 20th century philosophy, including his own, share an opposition to classical dualism
Dualism (philosophy of mind)
In philosophy of mind, dualism is a set of views about the relationship between mind and matter, which begins with the claim that mental phenomena are, in some respects, non-physical....

 that is both anti-essentialist and antimetaphysical. The psychoanalytic
Psychoanalysis
Psychoanalysis is a psychological theory developed in the late 19th and early 20th centuries by Austrian neurologist Sigmund Freud. Psychoanalysis has expanded, been criticized and developed in different directions, mostly by some of Freud's former students, such as Alfred Adler and Carl Gustav...

 work of Sigmund Freud
Sigmund Freud
Sigmund Freud , born Sigismund Schlomo Freud , was an Austrian neurologist who founded the discipline of psychoanalysis...

, Jacques Lacan
Jacques Lacan
Jacques Marie Émile Lacan was a French psychoanalyst and psychiatrist who made prominent contributions to psychoanalysis and philosophy, and has been called "the most controversial psycho-analyst since Freud". Giving yearly seminars in Paris from 1953 to 1981, Lacan influenced France's...

, Julia Kristeva
Julia Kristeva
Julia Kristeva is a Bulgarian-French philosopher, literary critic, psychoanalyst, sociologist, feminist, and, most recently, novelist, who has lived in France since the mid-1960s. She is now a Professor at the University Paris Diderot...

, and others has also been influential in contemporary continental philosophy
Continental philosophy
Continental philosophy, in contemporary usage, refers to a set of traditions of 19th and 20th century philosophy from mainland Europe. This sense of the term originated among English-speaking philosophers in the second half of the 20th century, who used it to refer to a range of thinkers and...

.

A notable phenomenon of the latter half of the century was the rise of popular writers on philosophy, such as Ayn Rand
Ayn Rand
Ayn Rand was a Russian-American novelist, philosopher, playwright, and screenwriter. She is known for her two best-selling novels The Fountainhead and Atlas Shrugged and for developing a philosophical system she called Objectivism....

, whose espoused systems proved influential among a general Anglophone readership despite their isolation from academic philosophy. Conversely, some philosophers have attempted to define and rehabilitate older traditions of philosophy. Most notably, Hans-Georg Gadamer
Hans-Georg Gadamer
Hans-Georg Gadamer was a German philosopher of the continental tradition, best known for his 1960 magnum opus, Truth and Method .-Life:...

 and Alasdair MacIntyre
Alasdair MacIntyre
Alasdair Chalmers MacIntyre is a British philosopher primarily known for his contribution to moral and political philosophy but known also for his work in history of philosophy and theology...

 have both, albeit in different ways, revived the tradition of Aristotelianism
Aristotelianism
Aristotelianism is a tradition of philosophy that takes its defining inspiration from the work of Aristotle. The works of Aristotle were initially defended by the members of the Peripatetic school, and, later on, by the Neoplatonists, who produced many commentaries on Aristotle's writings...

.

The philosophy of the present century is difficult to clarify due to its immaturity. A number of surviving 20th century philosophers have established themselves as early voices of influence in the 21st. These include Noam Chomsky
Noam Chomsky
Avram Noam Chomsky is an American linguist, philosopher, cognitive scientist, and activist. He is an Institute Professor and Professor in the Department of Linguistics & Philosophy at MIT, where he has worked for over 50 years. Chomsky has been described as the "father of modern linguistics" and...

, Saul Kripke
Saul Kripke
Saul Aaron Kripke is an American philosopher and logician. He is a professor emeritus at Princeton and teaches as a Distinguished Professor of Philosophy at the CUNY Graduate Center...

 and Jürgen Habermas
Jürgen Habermas
Jürgen Habermas is a German sociologist and philosopher in the tradition of critical theory and pragmatism. He is perhaps best known for his theory on the concepts of 'communicative rationality' and the 'public sphere'...

. The perceived conflict between continental
Continental philosophy
Continental philosophy, in contemporary usage, refers to a set of traditions of 19th and 20th century philosophy from mainland Europe. This sense of the term originated among English-speaking philosophers in the second half of the 20th century, who used it to refer to a range of thinkers and...

 and analytic
Analytic philosophy
Analytic philosophy is a generic term for a style of philosophy that came to dominate English-speaking countries in the 20th century...

 schools of philosophy remains prominent, despite increasing skepticism regarding the distinction's usefulness. A variety of new topics have risen to the stage in analytic philosophy, orienting much of contemporary discourse in the field of ethics
Ethics
Ethics, also known as moral philosophy, is a branch of philosophy that addresses questions about morality—that is, concepts such as good and evil, right and wrong, virtue and vice, justice and crime, etc.Major branches of ethics include:...

. New inquiries consider, for example, the ethical implications of new media and information exchange. Such developments have rekindled interest in the philosophy of technology
Philosophy of technology
The philosophy of technology is a philosophical field dedicated to studying the nature of technology and its social effects.- History :Considered under the rubric of the Greek term techne , the philosophy of technology goes to the very roots of Western philosophy.* In his Republic, Plato sees...

 and science
Philosophy of science
The philosophy of science is concerned with the assumptions, foundations, methods and implications of science. It is also concerned with the use and merit of science and sometimes overlaps metaphysics and epistemology by exploring whether scientific results are actually a study of truth...

. There has been increased enthusiasm for highly specialized areas in philosophy of science, such as in the Bayesian
Bayesian probability
Bayesian probability is one of the different interpretations of the concept of probability and belongs to the category of evidential probabilities. The Bayesian interpretation of probability can be seen as an extension of logic that enables reasoning with propositions, whose truth or falsity is...

 school of epistemology.

In contemporary continental thought, a number of developments are taking place. The field of postcolonial theory, championed in the late 20th century by theorists such as Gayatri Chakravorty Spivak
Gayatri Chakravorty Spivak
Gayatri Chakravorty Spivak is an Indian literary critic, theorist and a University Professor at Columbia University. She is best known for the essay "Can the Subaltern Speak?", considered a founding text of postcolonialism, and for her translation of Jacques Derrida's Of Grammatology. She...

 and Homi K. Bhabha
Homi K. Bhabha
Homi K. Bhabha is the Anne F. Rothenberg Professor of English and American Literature and Language, and the Director of the Humanities Center at Harvard University. He is one of the most important figures in contemporary post-colonial studies, and has coined a number of the field's neologisms and...

 has established itself as a major academic presence. The Slovenian philosopher Slavoj Žižek
Slavoj Žižek
Slavoj Žižek is a Slovenian philosopher, critical theorist working in the traditions of Hegelianism, Marxism and Lacanian psychoanalysis. He has made contributions to political theory, film theory, and theoretical psychoanalysis....

 remains tremendously popular in both academic and popular demographics, synthesizing Lacanian
Jacques Lacan
Jacques Marie Émile Lacan was a French psychoanalyst and psychiatrist who made prominent contributions to psychoanalysis and philosophy, and has been called "the most controversial psycho-analyst since Freud". Giving yearly seminars in Paris from 1953 to 1981, Lacan influenced France's...

, Hegelian
Georg Wilhelm Friedrich Hegel
Georg Wilhelm Friedrich Hegel was a German philosopher, one of the creators of German Idealism. His historicist and idealist account of reality as a whole revolutionized European philosophy and was an important precursor to Continental philosophy and Marxism.Hegel developed a comprehensive...

, and Althusserian
Louis Althusser
Louis Pierre Althusser was a French Marxist philosopher. He was born in Algeria and studied at the École Normale Supérieure in Paris, where he eventually became Professor of Philosophy....

 Marxist
Marxism
Marxism is an economic and sociopolitical worldview and method of socioeconomic inquiry that centers upon a materialist interpretation of history, a dialectical view of social change, and an analysis and critique of the development of capitalism. Marxism was pioneered in the early to mid 19th...

 thought in discussions of popular culture and politics. Žižek is also involved with the contemporary thrust to step beyond postmodernism
Postmodernism
Postmodernism is a philosophical movement evolved in reaction to modernism, the tendency in contemporary culture to accept only objective truth and to be inherently suspicious towards a global cultural narrative or meta-narrative. Postmodernist thought is an intentional departure from the...

 and the linguistic turn
Linguistic turn
The linguistic turn was a major development in Western philosophy during the 20th century, the most important characteristic of which is the focusing of philosophy and the other humanities primarily on the relationship between philosophy and language....

 of the 20th century. Key contributors to this movement are the French polymath Alain Badiou
Alain Badiou
Alain Badiou is a French philosopher, professor at European Graduate School, formerly chair of Philosophy at the École Normale Supérieure . Along with Giorgio Agamben and Slavoj Žižek, Badiou is a prominent figure in an anti-postmodern strand of continental philosophy...

, and those classified under the blanket designation of speculative realism
Speculative realism
Speculative realism is an emerging movement in contemporary philosophy which defines itself loosely in its stance of metaphysical realism against the dominant forms of post-Kantian philosophy or what it terms correlationism. Speculative realism takes its name from a conference held at Goldsmiths...

, including Quentin Meillassoux
Quentin Meillassoux
Quentin Meillassoux is a French philosopher. He teaches at the École Normale Supérieure, and is the son of the anthropologist Claude Meillassoux....

 and Ray Brassier
Ray Brassier
Ray Brassier is a member of the Philosophy faculty at the American University of Beirut, Lebanon, known for his work in philosophical realism. He was formerly Research Fellow at the Centre for Research in Modern European Philosophy at Middlesex University, London, England.He is the author of Nihil...

.

Eastern philosophy

In the West
Western culture
Western culture, sometimes equated with Western civilization or European civilization, refers to cultures of European origin and is used very broadly to refer to a heritage of social norms, ethical values, traditional customs, religious beliefs, political systems, and specific artifacts and...

, the term Eastern philosophy
Eastern philosophy
Eastern philosophy includes the various philosophies of Asia, including Chinese philosophy, Iranian philosophy, Japanese philosophy, Indian philosophy and Korean philosophy...

 refers very broadly to the various philosophies
Philosophy
Philosophy is the study of general and fundamental problems, such as those connected with existence, knowledge, values, reason, mind, and language. Philosophy is distinguished from other ways of addressing such problems by its critical, generally systematic approach and its reliance on rational...

 of "the East," namely Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

, including China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

, Persia and the general area. One must take into account that this term ignores that these countries do not belong to a single culture.

Ancient eastern philosophy developed mainly in India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 and China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

. Hindu philosophy primarily begins with Upanishad
Upanishad
The Upanishads are philosophical texts considered to be an early source of Hindu religion. More than 200 are known, of which the first dozen or so, the oldest and most important, are variously referred to as the principal, main or old Upanishads...

s, which can be dated around the middle of the first millennium BC. The oldest, such as the Brhadaranyaka and Chandogya Upanishads, have been dated to around the 8th century BCE. The philosophical edifice of Indian religions viz., Hinduism
Hinduism
Hinduism is the predominant and indigenous religious tradition of the Indian Subcontinent. Hinduism is known to its followers as , amongst many other expressions...

, Jainism
Jainism
Jainism is an Indian religion that prescribes a path of non-violence towards all living beings. Its philosophy and practice emphasize the necessity of self-effort to move the soul towards divine consciousness and liberation. Any soul that has conquered its own inner enemies and achieved the state...

, Buddhism
Buddhism
Buddhism is a religion and philosophy encompassing a variety of traditions, beliefs and practices, largely based on teachings attributed to Siddhartha Gautama, commonly known as the Buddha . The Buddha lived and taught in the northeastern Indian subcontinent some time between the 6th and 4th...

 is built on the foundation laid by the Upanishads. Hindu philosophy is followed by the Buddhist and Jain philosophies.
Confucianism
Confucianism
Confucianism is a Chinese ethical and philosophical system developed from the teachings of the Chinese philosopher Confucius . Confucianism originated as an "ethical-sociopolitical teaching" during the Spring and Autumn Period, but later developed metaphysical and cosmological elements in the Han...

 can be considered as the oldest school of philosophy in China. Confucianism developed in China around the same time as Buddhism and Jainism developed in India. Another school of philosophy, Taoism
Taoism
Taoism refers to a philosophical or religious tradition in which the basic concept is to establish harmony with the Tao , which is the mechanism of everything that exists...

, developed in China around 200 BC.

Babylonian philosophy

See article Babylonian literature: Philosophy

Indian philosophy

See article Indian philosophy
Indian philosophy
India has a rich and diverse philosophical tradition dating back to ancient times. According to Radhakrishnan, the earlier Upanisads constitute "...the earliest philosophical compositions of the world."...



See also Hindu philosophy
Hindu philosophy
Hindu philosophy is divided into six schools of thought, or , which accept the Vedas as supreme revealed scriptures. Three other schools do not accept the Vedas as authoritative...

 and Jainism
Jainism
Jainism is an Indian religion that prescribes a path of non-violence towards all living beings. Its philosophy and practice emphasize the necessity of self-effort to move the soul towards divine consciousness and liberation. Any soul that has conquered its own inner enemies and achieved the state...


Abrahamic philosophy

Abrahamic philosophy, in its loosest sense, comprises the series of philosophical schools that emerged from the study and commentary of the common ancient Semitic
Semitic
In linguistics and ethnology, Semitic was first used to refer to a language family of largely Middle Eastern origin, now called the Semitic languages...

 tradition which can be traced by their adherents to Abraham
Abraham
Abraham , whose birth name was Abram, is the eponym of the Abrahamic religions, among which are Judaism, Christianity and Islam...

 ("Father/Leader of many" Hebrew אַבְרָהָם ("Avraham") Arabic ابراهيم ("Ibrahim"), a patriarch whose life is narrated in the Hebrew Bible
Hebrew Bible
The Hebrew Bible is a term used by biblical scholars outside of Judaism to refer to the Tanakh , a canonical collection of Jewish texts, and the common textual antecedent of the several canonical editions of the Christian Old Testament...

/Old Testament
Old Testament
The Old Testament, of which Christians hold different views, is a Christian term for the religious writings of ancient Israel held sacred and inspired by Christians which overlaps with the 24-book canon of the Masoretic Text of Judaism...

, and as a prophet in the Qur'an
Qur'an
The Quran , also transliterated Qur'an, Koran, Alcoran, Qur’ān, Coran, Kuran, and al-Qur’ān, is the central religious text of Islam, which Muslims consider the verbatim word of God . It is regarded widely as the finest piece of literature in the Arabic language...

 and also called a prophet in Genesis 20:7).

The standard text common to all of these subsequent traditions are what is known as the Hebrew Bible
Hebrew Bible
The Hebrew Bible is a term used by biblical scholars outside of Judaism to refer to the Tanakh , a canonical collection of Jewish texts, and the common textual antecedent of the several canonical editions of the Christian Old Testament...

, roughly the first five books of the Old Testament
Old Testament
The Old Testament, of which Christians hold different views, is a Christian term for the religious writings of ancient Israel held sacred and inspired by Christians which overlaps with the 24-book canon of the Masoretic Text of Judaism...

, starting with the book of Genesis through to Deuteronomy
Deuteronomy
The Book of Deuteronomy is the fifth book of the Hebrew Bible, and of the Jewish Torah/Pentateuch...

. However, each of them added substantially different texts to their emerging canons, and hence their respective philosophical developments varied widely.

Islamic philosophy

See articles Islamic philosophy
Islamic philosophy
Islamic philosophy is a branch of Islamic studies. It is the continuous search for Hekma in the light of Islamic view of life, universe, ethics, society, and so on...

, Early Islamic philosophy
Early Islamic philosophy
Early Islamic philosophy or classical Islamic philosophy is a period of intense philosophical development beginning in the 2nd century AH of the Islamic calendar and lasting until the 6th century AH...

, and Modern Islamic philosophy
Modern Islamic philosophy
Aziz Abbassi’s English translation found in the following pages wasmade from the French Introduction à la critique de la raison Arabe,translated from Arabic to French by Ahmed Mahfoud and Marc Geoffroy,...



Islamic philosophy as Henry Corbin
Henry Corbin
Henry Corbin was a philosopher, theologian and professor of Islamic Studies at the Sorbonne in Paris, France.Corbin was born in Paris in April 1903. As a boy he revealed the profound sensitivity to music so evident in his work...

 describes is a philosophy whose development, and whose modalities, are essentially linked to the religious and spiritual fact of Islam
Islam
Islam . The most common are and .   : Arabic pronunciation varies regionally. The first vowel ranges from ~~. The second vowel ranges from ~~~...

. In the other word, it represents the style of philosophy produced within the framework of Islamic culture. This description does not suggest that it is necessarily concerned with religious issues, nor even that it is exclusively produced by Muslims.

Religious roots

Theoretical questions were raised right from the beginning of Islam, questions which could to a certain extent be answered by reference to Islamic texts such as the Quran, the practices of the community and the traditional sayings of Muhammad
Muhammad
Muhammad |ligature]] at U+FDF4 ;Arabic pronunciation varies regionally; the first vowel ranges from ~~; the second and the last vowel: ~~~. There are dialects which have no stress. In Egypt, it is pronounced not in religious contexts...

, the Prophet of Islam
Prophets of Islam
Muslims identify the Prophets of Islam as those humans chosen by God and given revelation to deliver to mankind. Muslims believe that every prophet was given a belief to worship God and their respective followers believed it as well...

, and his Companion
Sahabah
In Islam, the ' were the companions, disciples, scribes and family of the Islamic prophet...

s. In fact, rational argumentation about Islamic doctrines starts with Quran itself, and has been followed up in the utterances of the Muhammad and especially in the sermons of Ali
Ali
' |Ramaḍān]], 40 AH; approximately October 23, 598 or 600 or March 17, 599 – January 27, 661).His father's name was Abu Talib. Ali was also the cousin and son-in-law of the Islamic prophet Muhammad, and ruled over the Islamic Caliphate from 656 to 661, and was the first male convert to Islam...

. This despite the fact that their style and approach are different from those of the Muslim theologians.

Though nothing definite can be said about the beginnings of theology
Kalam
ʿIlm al-Kalām is the Islamic philosophical discipline of seeking theological principles through dialectic. Kalām in Islamic practice relates to the discipline of seeking theological knowledge through debate and argument. A scholar of kalām is referred to as a mutakallim...

 among Muslims, what is certain is that discussion of some of the problems, such as the issue of predestination
Predestination in Islam
Qadar is divine destiny in Islam. More precisely, Qadar relates to the Knowledge and Omniscience of God about all events. Linguistically, Qadar means "measure", and when used in relation to God, means His exact knowledge of all events...

, free will
Free will
"To make my own decisions whether I am successful or not due to uncontrollable forces" -Troy MorrisonA pragmatic definition of free willFree will is the ability of agents to make choices free from certain kinds of constraints. The existence of free will and its exact nature and definition have long...

 and Divine Justice
Adalah
Adalah means justice and denotes The Justice of God. It is among the five Shia Principles of the Religion.The Shias believe that there is intrinsic good or evil in things, and that God commands them to do the good things and shun the evil...

, became current among Muslims during the first half of the 2nd century of Islam coincides with 8th century. Perhaps the first formal centre of such discussions was the circle of Hasan al-Basri(d.728-29). Later several theological schools have emerged from 8th to 10th century. Mu'tazili
Mu'tazili
' is an Islamic school of speculative theology that flourished in the cities of Basra and Baghdad, both in present-day Iraq, during the 8th–10th centuries. The adherents of the Mu'tazili school are best known for their having asserted that, because of the perfect unity and eternal nature of God,...

 theology originated in the 8th century in Basra
Basra
Basra is the capital of Basra Governorate, in southern Iraq near Kuwait and Iran. It had an estimated population of two million as of 2009...

 (Iraq) by Wasil ibn Ata
Wasil ibn Ata
Wasil ibn Ata was an important Muslim theologian and jurist of his time, and by many accounts is considered to be the founder of the Mutazilite school of Islamic thought....

 (d.748 A.D.).

Transferring of Greek philosophy

The early conquests of the Muslims
Muslim conquests
Muslim conquests also referred to as the Islamic conquests or Arab conquests, began with the Islamic prophet Muhammad. He established a new unified polity in the Arabian Peninsula which under the subsequent Rashidun and Umayyad Caliphates saw a century of rapid expansion of Muslim power.They...

 brought them into close contact with centers of civilization heavily influenced by Christianity
Christianity
Christianity is a monotheistic religion based on the life and teachings of Jesus as presented in canonical gospels and other New Testament writings...

 and also by Greek
Culture of Greece
The culture of Greece has evolved over thousands of years, beginning in Mycenaean Greece, continuing most notably into Classical Greece, through the influence of the Roman Empire and its Greek Eastern successor the Byzantine Empire...

 culture. Many rulers wished to understand and use the Greek forms of knowledge, some practical and some theoretical, and a large translation project
House of Wisdom
The House of Wisdom was a library and translation institute established in Abbassid-era Baghdad, Iraq. It was a key institution in the Translation Movement and considered to have been a major intellectual centre during the Islamic Golden Age...

 started which saw official support for the assimilation of Greek culture. This had a powerful impact upon all areas of Islamic philosophy. Neoplatonism
Neoplatonism
Neoplatonism , is the modern term for a school of religious and mystical philosophy that took shape in the 3rd century AD, based on the teachings of Plato and earlier Platonists, with its earliest contributor believed to be Plotinus, and his teacher Ammonius Saccas...

 definitely became the prevalent school of thought, following closely the curriculum of Greek philosophy which was initially transmitted to the Islamic world.
Early Islamic philosophy

The first period of Islamic philosophy coincides with Islamic golden age
Islamic Golden Age
During the Islamic Golden Age philosophers, scientists and engineers of the Islamic world contributed enormously to technology and culture, both by preserving earlier traditions and by adding their own inventions and innovations...

. During this time pure philosophical thought is usually used Aristotelianism
Aristotelianism
Aristotelianism is a tradition of philosophy that takes its defining inspiration from the work of Aristotle. The works of Aristotle were initially defended by the members of the Peripatetic school, and, later on, by the Neoplatonists, who produced many commentaries on Aristotle's writings...

 and Neoplatonism
Neoplatonism
Neoplatonism , is the modern term for a school of religious and mystical philosophy that took shape in the 3rd century AD, based on the teachings of Plato and earlier Platonists, with its earliest contributor believed to be Plotinus, and his teacher Ammonius Saccas...

 thought as its sources. But it also influenced by Islamic thought and culture. Falaturi
Abdoldjavad Falaturi
Abdoldjavad Falaturi was a German scholar of Iranian origin.He studied Islam in Iran, up to the highest possible level, before going to Germany where he studied philosophy He has also written several other official publications for education in Germany on Islamic theology Abdoldjavad Falaturi...

 has shown in his research that how Hellenistic philosophy diverged in the context of Islamic culture. On the other hand Corbin has shown how mystic aspect of Islam, especially Shia affected philosophy. This period begins with al-Kindi
Al-Kindi
' , known as "the Philosopher of the Arabs", was a Muslim Arab philosopher, mathematician, physician, and musician. Al-Kindi was the first of the Muslim peripatetic philosophers, and is unanimously hailed as the "father of Islamic or Arabic philosophy" for his synthesis, adaptation and promotion...

 and ends with Averroes
Averroes
' , better known just as Ibn Rushd , and in European literature as Averroes , was a Muslim polymath; a master of Aristotelian philosophy, Islamic philosophy, Islamic theology, Maliki law and jurisprudence, logic, psychology, politics, Arabic music theory, and the sciences of medicine, astronomy,...

(d.1198). On the other hand there were crucial theological debates between Muslim theologians
Kalam
ʿIlm al-Kalām is the Islamic philosophical discipline of seeking theological principles through dialectic. Kalām in Islamic practice relates to the discipline of seeking theological knowledge through debate and argument. A scholar of kalām is referred to as a mutakallim...

. These discussion also helped to rise of rational debates about religion, especially Islam
Islam
Islam . The most common are and .   : Arabic pronunciation varies regionally. The first vowel ranges from ~~. The second vowel ranges from ~~~...

.

Avicenna
Avicenna
Abū ʿAlī al-Ḥusayn ibn ʿAbd Allāh ibn Sīnā , commonly known as Ibn Sīnā or by his Latinized name Avicenna, was a Persian polymath, who wrote almost 450 treatises on a wide range of subjects, of which around 240 have survived...

 is one the most prominent figures of this period. He is a thinker who attempted to redefine the course of Islamic philosophy
Islamic philosophy
Islamic philosophy is a branch of Islamic studies. It is the continuous search for Hekma in the light of Islamic view of life, universe, ethics, society, and so on...

 and channel it into new directions. Avicenna's metaphysical system is built on the ingredients and conceptual building blocks which are largely Aristotelian
Aristotelianism
Aristotelianism is a tradition of philosophy that takes its defining inspiration from the work of Aristotle. The works of Aristotle were initially defended by the members of the Peripatetic school, and, later on, by the Neoplatonists, who produced many commentaries on Aristotle's writings...

 and Neoplatonic
Neoplatonism
Neoplatonism , is the modern term for a school of religious and mystical philosophy that took shape in the 3rd century AD, based on the teachings of Plato and earlier Platonists, with its earliest contributor believed to be Plotinus, and his teacher Ammonius Saccas...

, but the final structure is more than the sum of its parts. In the Islamic Golden Age
Islamic Golden Age
During the Islamic Golden Age philosophers, scientists and engineers of the Islamic world contributed enormously to technology and culture, both by preserving earlier traditions and by adding their own inventions and innovations...

, due to Avicenna
Avicenna
Abū ʿAlī al-Ḥusayn ibn ʿAbd Allāh ibn Sīnā , commonly known as Ibn Sīnā or by his Latinized name Avicenna, was a Persian polymath, who wrote almost 450 treatises on a wide range of subjects, of which around 240 have survived...

's successful reconciliation between Aristotelianism
Aristotelianism
Aristotelianism is a tradition of philosophy that takes its defining inspiration from the work of Aristotle. The works of Aristotle were initially defended by the members of the Peripatetic school, and, later on, by the Neoplatonists, who produced many commentaries on Aristotle's writings...

 and Neoplatonism
Neoplatonism
Neoplatonism , is the modern term for a school of religious and mystical philosophy that took shape in the 3rd century AD, based on the teachings of Plato and earlier Platonists, with its earliest contributor believed to be Plotinus, and his teacher Ammonius Saccas...

 along with Islamic theology
Kalam
ʿIlm al-Kalām is the Islamic philosophical discipline of seeking theological principles through dialectic. Kalām in Islamic practice relates to the discipline of seeking theological knowledge through debate and argument. A scholar of kalām is referred to as a mutakallim...

, Avicennism eventually became the leading school of early Islamic philosophy
Early Islamic philosophy
Early Islamic philosophy or classical Islamic philosophy is a period of intense philosophical development beginning in the 2nd century AH of the Islamic calendar and lasting until the 6th century AH...

 by the 12th century. Avicenna had become a central authority on philosophy by then.
Although this school was highly criticized by Muslim theologians, such as al-Ghazali
Al-Ghazali
Abu Hāmed Mohammad ibn Mohammad al-Ghazzālī , known as Algazel to the western medieval world, born and died in Tus, in the Khorasan province of Persia was a Persian Muslim theologian, jurist, philosopher, and mystic....

, philosophers, like Averroes
Averroes
' , better known just as Ibn Rushd , and in European literature as Averroes , was a Muslim polymath; a master of Aristotelian philosophy, Islamic philosophy, Islamic theology, Maliki law and jurisprudence, logic, psychology, politics, Arabic music theory, and the sciences of medicine, astronomy,...

, and Sufis
Sufism
Sufism or ' is defined by its adherents as the inner, mystical dimension of Islam. A practitioner of this tradition is generally known as a '...

, Avicenna's writings spread like fire and continued until today to form the basis of philosophic education in the Islamic world. For to the extent that the post-Averroistic tradition remained philosophic, especially in the eastern Islamic lands, it moved in the directions charted for it by Avicenna in the investigation of both theoretical and practical sciences.
Mystical philosophy

After the death of Averroes
Averroes
' , better known just as Ibn Rushd , and in European literature as Averroes , was a Muslim polymath; a master of Aristotelian philosophy, Islamic philosophy, Islamic theology, Maliki law and jurisprudence, logic, psychology, politics, Arabic music theory, and the sciences of medicine, astronomy,...

, Islamic philosophy in the Peripatetic style went out of fashion in the Arab part of Muslim world, until the 19th century. Mystical philosophy, by contrast, continued to flourish, although no thinkers matched the creativity of Ibn Arabi
Ibn Arabi
Ibn ʿArabī was an Andalusian Moorish Sufi mystic and philosopher. His full name was Abū 'Abdillāh Muḥammad ibn 'Alī ibn Muḥammad ibn `Arabī .-Biography:...

 or Ibn Sab‘in. In the Persian-speaking part, Islamic philosophy has continued to follow a largely Illuminationist curriculum, which is introduced by Suhrawardi
Suhrawardi
Suhrawardi or al-Suhrawardi is a name that may refer to:** Shahab al-Din Suhrawardi , Iranian philosopher also known as Sohrevardi* The Suhrawardiyya order of Sufism...

.
Transcendent Theosophy

The third period, according to Corbin, begins in the 16th century after emergence of Safavid dynasty
Safavid dynasty
The Safavid dynasty was one of the most significant ruling dynasties of Iran. They ruled one of the greatest Persian empires since the Muslim conquest of Persia and established the Twelver school of Shi'a Islam as the official religion of their empire, marking one of the most important turning...

 in Persia. The most prominent figure of this period is Mulla Sadra
Mulla Sadra
Ṣadr ad-Dīn Muḥammad Shīrāzī also called Mulla Sadrā was a Persian Shia Islamic philosopher, theologian and ‘Ālim who led the Iranian cultural renaissance in the 17th century...

 who introduced Transcendent Theosophy
Transcendent Theosophy
Transcendent theosophy or al-hikmat al-muta’li , the doctrine and philosophy developed by Persian philosopher, Mulla Sadra, is one of two main disciplines of Islamic philosophy that is currently live and active....

 as a critical philosophy which brought together Peripatetic, Illuminationist and gnostic philosophy along with Ash'ari
Ash'ari
The Ashʿari theology is a school of early Muslim speculative theology founded by the theologian Abu al-Hasan al-Ash'ari...

 and Twelvers theology
Kalam
ʿIlm al-Kalām is the Islamic philosophical discipline of seeking theological principles through dialectic. Kalām in Islamic practice relates to the discipline of seeking theological knowledge through debate and argument. A scholar of kalām is referred to as a mutakallim...

, the source of which lay in the Islamic revelation and the mystical experience of reality as existence. This philosophy becomes dominant form of philosophy in Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

 since 19th century. Shah Wali Allah extended Suhrawardi school of thought to the Indian subcontinent
Indian subcontinent
The Indian subcontinent, also Indian Subcontinent, Indo-Pak Subcontinent or South Asian Subcontinent is a region of the Asian continent on the Indian tectonic plate from the Hindu Kush or Hindu Koh, Himalayas and including the Kuen Lun and Karakoram ranges, forming a land mass which extends...

.
Modern era

َNew trends have emerged during 19th and 20th centuries due to challenge of western philosophy
Western philosophy
Western philosophy is the philosophical thought and work of the Western or Occidental world, as distinct from Eastern or Oriental philosophies and the varieties of indigenous philosophies....

 and Modernity
Modernity
Modernity typically refers to a post-traditional, post-medieval historical period, one marked by the move from feudalism toward capitalism, industrialization, secularization, rationalization, the nation-state and its constituent institutions and forms of surveillance...

 to traditional Islamic philosophy. On one hand some of the scholars such as Jamal-ad-Din Asadabadi and Muhammad Abduh
Muhammad Abduh
Muhammad Abduh was an Egyptian jurist, religious scholar and liberal reformer, regarded as the founder of Islamic Modernism...

 sought to find rational principles which would establish a form of thought which is both distinctively Islamic and also appropriate for life in modern scientific societies, a debate which is continuing within Islamic philosophy today. Muhammad Iqbal
Muhammad Iqbal
Sir Muhammad Iqbal , commonly referred to as Allama Iqbal , was a poet and philosopher born in Sialkot, then in the Punjab Province of British India, now in Pakistan...

 is one of the prominent figure of this group who provided a rather eclectic mixture of Islamic and European philosophy. On the other hand some thinkers reacted to the phenomenon of modernity
Modernity
Modernity typically refers to a post-traditional, post-medieval historical period, one marked by the move from feudalism toward capitalism, industrialization, secularization, rationalization, the nation-state and its constituent institutions and forms of surveillance...

 by developing Islamic fundamentalism
Islamic fundamentalism
Islamic fundamentalism is a term used to describe religious ideologies seen as advocating a return to the "fundamentals" of Islam: the Quran and the Sunnah. Definitions of the term vary. According to Christine L...

. This resuscitated the earlier antagonism to philosophy by arguing for a return to the original principles of Islam and rejected modernity as a Western imperialist intrusion. In Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

, the effects of mystic philosophers especially Mulla Sadra is great, and philosophers who are more loyal to traditional Islamic philosophy
Islamic philosophy
Islamic philosophy is a branch of Islamic studies. It is the continuous search for Hekma in the light of Islamic view of life, universe, ethics, society, and so on...

 have tried to keep alive this school and use it to deal with Modernism. Allameh Tabatabaei
Allameh Tabatabaei
Allameh Seyyed Muhammad Husayn Tabatabaei was one of the most prominent thinkers of philosophy and contemporary Shia Islam...

 is the most prominent figure of this group.
Nowadays Seyyed Hossein Nasr
Seyyed Hossein Nasr
Seyyed Hossein Nasr is an Iranian University Professor of Islamic studies at George Washington University, and a prominent Islamic philosopher...

 tries to introduce traditional Islamic philosophy
Islamic philosophy
Islamic philosophy is a branch of Islamic studies. It is the continuous search for Hekma in the light of Islamic view of life, universe, ethics, society, and so on...

 and
dealt with the Islamic response to the challenges of the modern world. Finally, there have been many thinkers who have adapted and employed non-Islamic philosophical ideas as part of the normal philosophical process of seeking to understand conceptual problems such as Hegelianism
Hegelianism
Hegelianism is a collective term for schools of thought following or referring to G. W. F. Hegel's philosophy which can be summed up by the dictum that "the rational alone is real", which means that all reality is capable of being expressed in rational categories...

 and Existentialism
Existentialism
Existentialism is a term applied to a school of 19th- and 20th-century philosophers who, despite profound doctrinal differences, shared the belief that philosophical thinking begins with the human subject—not merely the thinking subject, but the acting, feeling, living human individual...

. Therefore modern Islamic philosophy is thus quite diverse, employing a wide variety of techniques and approaches to its subjects.

External links

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