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Ontology



 
 
Ontology in philosophy
Philosophy

Philosophy is the study of general problems concerning matters such as existence, knowledge, truth, beauty, justice, validity, mind, and language....
 (from the Greek
Greek language

Greek is an Indo-European languages native to the southern Balkan peninsula, the language of the Greek people. It forms an independent branch within Indo-European....
 , genitive : of being to be> and -????a
-logy

-logy is a suffix in English language, found in words originally adapted from Ancient Greek words ending in -????a . The earliest English examples were anglicizations of the French language -logie, which was in turn inherited from the Latin language -logia....
: science, study, theory) is the study of the nature of being
Being

In ontology being is anything that can be said to be, either Transcendence or Immanence.The nature of being varies by philosophy, given different interpretations in the frameworks of Parmenides, Leucippus, Plato, Aristotle, Plotinus, Descartes, Spinoza, Leibniz, Hegel, Heidegger, and Sartre....
, existence
Existence

In common usage, existence is the world of which we are aware through our senses, but in philosophy the word has a more specialized meaning, and is often contrasted with essence....
 or reality
Reality

Reality, in everyday usage, means "the state of things as they actually exist". In a sense it is what is real. The term reality, in its widest sense, includes everything that being, whether or not it is observation or comprehension....
 in general, as well as of the basic categories of being
Category of being

In metaphysics , the different kinds or ways of being are called categories of being or simply categories. According to the Aristotle tradition, a being is anything that can be said to be in the various senses of this word....
 and their relations. Traditionally listed as a part of the major branch of philosophy known as metaphysics
Metaphysics

Metaphysics investigates principles of reality transcending those of any particular science. cosmology and ontology are traditional branches of metaphysics....
, ontology deals with questions concerning what entities exist or can be said to exist, and how such entities can be grouped, related within a hierarchy
Hierarchy

A 'hierarchy' is an arrangement of items The word derives from the Greek language , from ?e?????? , "president of sacred rites, high-priest" and that from , "sacred" + , "to lead, to rule"....
, and subdivided according to similarities and differences.

ents of Aristotle
Aristotle

Aristotle was a Greeks philosopher, a student of Plato and teacher of Alexander the Great. He wrote on many subjects, including physics, metaphysics, Poetics , theater, music, logic, rhetoric, politics, government, ethics, biology and zoology....
 first used the word 'metaphysica'
Metaphysics (Aristotle)

Metaphysics is one of the principal works of Aristotle and the first major work of the Metaphysics with the same name. The principal subject is "being qua being", or being understood as being....
 (literally "after the physical") to refer to what their teacher described as "the science of being qua being" - later known as ontology.






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Quotations


Ontology recapitulates philology.

attributed to James Grier Miller by W.V. Quine in "Word and Object", p.viii (1960), (A reference to the phrase "Ontogeny recapitulates phylogeny", a summary of recapitulation theory.)





Encyclopedia


Ontology in philosophy
Philosophy

Philosophy is the study of general problems concerning matters such as existence, knowledge, truth, beauty, justice, validity, mind, and language....
 (from the Greek
Greek language

Greek is an Indo-European languages native to the southern Balkan peninsula, the language of the Greek people. It forms an independent branch within Indo-European....
 , genitive : of being to be> and -????a
-logy

-logy is a suffix in English language, found in words originally adapted from Ancient Greek words ending in -????a . The earliest English examples were anglicizations of the French language -logie, which was in turn inherited from the Latin language -logia....
: science, study, theory) is the study of the nature of being
Being

In ontology being is anything that can be said to be, either Transcendence or Immanence.The nature of being varies by philosophy, given different interpretations in the frameworks of Parmenides, Leucippus, Plato, Aristotle, Plotinus, Descartes, Spinoza, Leibniz, Hegel, Heidegger, and Sartre....
, existence
Existence

In common usage, existence is the world of which we are aware through our senses, but in philosophy the word has a more specialized meaning, and is often contrasted with essence....
 or reality
Reality

Reality, in everyday usage, means "the state of things as they actually exist". In a sense it is what is real. The term reality, in its widest sense, includes everything that being, whether or not it is observation or comprehension....
 in general, as well as of the basic categories of being
Category of being

In metaphysics , the different kinds or ways of being are called categories of being or simply categories. According to the Aristotle tradition, a being is anything that can be said to be in the various senses of this word....
 and their relations. Traditionally listed as a part of the major branch of philosophy known as metaphysics
Metaphysics

Metaphysics investigates principles of reality transcending those of any particular science. cosmology and ontology are traditional branches of metaphysics....
, ontology deals with questions concerning what entities exist or can be said to exist, and how such entities can be grouped, related within a hierarchy
Hierarchy

A 'hierarchy' is an arrangement of items The word derives from the Greek language , from ?e?????? , "president of sacred rites, high-priest" and that from , "sacred" + , "to lead, to rule"....
, and subdivided according to similarities and differences.

Overview

Students of Aristotle
Aristotle

Aristotle was a Greeks philosopher, a student of Plato and teacher of Alexander the Great. He wrote on many subjects, including physics, metaphysics, Poetics , theater, music, logic, rhetoric, politics, government, ethics, biology and zoology....
 first used the word 'metaphysica'
Metaphysics (Aristotle)

Metaphysics is one of the principal works of Aristotle and the first major work of the Metaphysics with the same name. The principal subject is "being qua being", or being understood as being....
 (literally "after the physical") to refer to what their teacher described as "the science of being qua being" - later known as ontology. 'Qua' means 'in the capacity of': hence, ontology is inquiry into being
Being

In ontology being is anything that can be said to be, either Transcendence or Immanence.The nature of being varies by philosophy, given different interpretations in the frameworks of Parmenides, Leucippus, Plato, Aristotle, Plotinus, Descartes, Spinoza, Leibniz, Hegel, Heidegger, and Sartre....
 in so much as it is being, or into being in general, beyond any particular thing which is or exists; and the study of beings
Object (philosophy)

In philosophy, an object is a thing, an entity, or a being. This may be taken in several senses.In its weakest sense, the word object is the most all-purpose of nouns, and can replace a noun in any sentence at all....
 insofar as they exist, and not insofar as, for instance, particular fact
Fact

A fact is something said to be true or supposed to have happened, example: Kiira is mean, FACT. An idea becomes a fact after competent people have tested a hypothesis through the scientific method....
s obtained about them or particular properties to them. Take anything you can find in the world, and look at it, not as a puppy or a slice of pizza or a folding chair or a president, but just as something that is. More specifically, ontology concerns determining what categories of being
Category of being

In metaphysics , the different kinds or ways of being are called categories of being or simply categories. According to the Aristotle tradition, a being is anything that can be said to be in the various senses of this word....
 are fundamental and asks whether, and in what sense, the items in those categories can be said to "be".

Some philosophers, notably of the Plato
Plato

Plato , was a Classical Greece Greeks philosopher, mathematician, writer of philosophical dialogues, and founder of the Platonic Academy in Ancient Athens, the first institution of higher learning in the western world....
nic school, contend that all nouns refer to existent entities. Other philosophers contend that nouns do not always name entities, but that some provide a kind of shorthand for reference to a collection of either objects
Object (philosophy)

In philosophy, an object is a thing, an entity, or a being. This may be taken in several senses.In its weakest sense, the word object is the most all-purpose of nouns, and can replace a noun in any sentence at all....
 or events
Event (philosophy)

In philosophy, events are objects in time or instantiations of Property in objects. However, a definite definition has not been reached, as multiple theories exist concerning events....
. In this latter view, mind
Mind

Mind refers to the aspects of intellect and consciousness manifested as combinations of thought, perception, memory, emotion, free will and imagination, including all of the brain's conscious and unconscious cognitive processes....
, instead of referring to an entity, refers to a collection of mental events experienced by a person; society
Society

A society is a group of humans characterized by patterns of relationships between individuals that share a distinctive culture and/or institutions....
 refers to a collection of persons with some shared characteristics, and geometry
Geometry

Geometry arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre-modern mathematics, the other being the study of numbers....
 refers to a collection of a specific kind of intellectual activity. Between these poles of realism
Platonic realism

Platonic realism is a philosophy term usually used to refer to the idea of Philosophical realism regarding the existence of universals after the Greek philosophy philosopher Plato , a student of Socrates, and the teacher of Aristotle....
 and nominalism
Nominalism

Nominalism is a Metaphysics view in philosophy according to which general or abstract terms and Predicate exist but that either Universal or abstract objects, which are sometimes thought to correspond to these terms, do not exist....
, there are also a variety of other positions
Moderate realism

Moderate realism as a position in the debate on the metaphysics of universal holds that there is no realm in which universals exist It is opposed to both full-blooded realism , such as the theory of Platonic forms, and nominalism....
; but any ontology must give an account of which words refer to entities, which do not, why, and what categories result. When one applies this process to nouns such as electron
Electron

The electron is a subatomic particle that carries a negative electric charge. It has elementary particle and is believed to be a point particle....
s
, energy
Energy

In physics, energy is a scalar physical quantity that describes the amount of Work_ that can be performed by a force. Energy is an attribute of objects and systems that is subject to a conservation law....
, contract
Contract

A contract is an exchange of promises between two or more parties to do, or refrain from doing, an act which is enforceable in a court of law. It is a binding legal agreement....
, happiness
Happiness

Happiness is a state of mind or feeling such as contentment, satisfaction, pleasure, or joy. A variety of Philosophy, Religion, Psychology and Biology approaches have been taken to defining happiness and identifying its sources....
, space
Space

Space is the boundless, three-dimensional extent in which Physical body and events occur and have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physics usually consider it, with time, to be part of the boundless four-dimensional continuum known as spacetime....
, time
Time

Time is a component of the measurement used to sequence events, to compare the durations of events and the intervals between them, and to quantify the motions of objects....
, truth
Truth

semantic fields for the word truth extend from honesty, good faith, and sincerity in general, to agreement with fact or reality in particular....
, causality
Causality

Causality denotes a necessary relationship between one event and another event which is the direct consequence of the first.While this informal understanding suffices in everyday use, the Philosophy analysis of how best to characterize causality extends over millennia....
, and god
God

God is a deity in theism and deism religions and other belief systems, representing either the sole deity in monotheism, or a principal deity in polytheism....
, ontology becomes fundamental to many branches of philosophy.

History of ontology


Etymology

While the etymology
Etymology

Etymology is the study of the roots and history of words; and how their form and meaning have changed over time.In languages with a long detailed history, etymology makes use of philology, the study of how words change from culture to culture over time....
 is Greek, the oldest extant record of the word itself is the Latin form ontologia, which appeared in 1606, in the work Ogdoas Scholastica by Jacob Lorhard
Jacob Lorhard

Jacob Lorhard was a German people philosopher and pedagogue based in St. Gallen, Switzerland.In 1603 Lorhard became Rector of the Gymnasium in St....
 (Lorhardus) and in 1613 in the Lexicon philosophicum by Rudolf Göckel (Goclenius). The first occurrence in English of "ontology" as recorded by the OED (Oxford English Dictionary, second edition, 1989) appears in Bailey’s dictionary of 1721, which defines ontology as ‘an Account of being in the Abstract’ - though, of course, such an entry indicates the term was already in use at the time. It is likely the word was first used in its Latin form by philosophers based on the Latin roots, which themselves are based on the Greek. The current on line edition of the OED (Draft Revision September 2008) give as first occurrence in English a work by Gideon Harvey (1636/7-1702): Archelogia philosophica nova; or, New principles of Philosophy. Containing Philosophy in general, Metaphysicks or Ontology, Dynamilogy or a Discourse of Power, Religio Philosophi or Natural Theology, Physicks or Natural philosophy - London, Thomson, 1663.

Origins


Parmenides and Monism
Monism

Monism is any philosophical view which holds that there is unity in a given field of inquiry, where this is not to be expected. Thus, some philosophers may hold that the Universe is really just one thing, despite its many appearances and diversities; or theology may support the view that there is one God, with many manifestations in different...
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....
 was among the first to propose an ontological characterisation of the fundamental nature of reality, in his Poem. This asserts that existence is what exists, and that there is nothing that does not exist. Hence, there can be neither void nor vacuum; and true reality can neither come into nor leave existence, but is limitless, eternal, uniform, and unchanging. Parmenides thus holds that change, as experienced in everyday sensation, is illusory and, arguably, that everything is one (Monism
Monism

Monism is any philosophical view which holds that there is unity in a given field of inquiry, where this is not to be expected. Thus, some philosophers may hold that the Universe is really just one thing, despite its many appearances and diversities; or theology may support the view that there is one God, with many manifestations in different...
).

Ontological pluralism
Opposite to eleatic monism is the pluralistic conception of Being
Being

In ontology being is anything that can be said to be, either Transcendence or Immanence.The nature of being varies by philosophy, given different interpretations in the frameworks of Parmenides, Leucippus, Plato, Aristotle, Plotinus, Descartes, Spinoza, Leibniz, Hegel, Heidegger, and Sartre....
 of Anaxagoras
Anaxagoras

Anaxagoras was a Pre-Socratic philosophy Greek philosophy famous for introducing the cosmological concept of Nous , the ordering force....
 and Leucippus
Leucippus

Leucippus or Leukippos was the first to develop the theory of atomism ? the idea that everything is composed entirely of various imperishable, indivisible elements called atoms ? which was elaborated in far greater detail by his pupil and successor, Democritus....
. They in the V century B.C. replaced the reality of Being (unique and unchanging) with the Becoming and therefore by a more fundamental and elementary ontic plurality. This thesis borns in the Greek-ion world and in two different ways by Anaxagoras and by Leucippus, the first with the theory of "seeds" (Aristotle will called them "homeomeries") of the various substances, the second with the atomistic theory, which sees the reality as based on the vacuum
Vacuum

A vacuum is a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure. The word comes from the Latin term for "empty," but in reality, no volume of space can ever be perfectly empty....
, the atoms and their intrinsic movement in it.

The materialist Atomism
Atomism

In natural philosophy, atomism is the philosophical theses that was theoryzed by Leucippus in the fifth century BC. For it all the objects in the universe are composed of very small, indestructible building blocks ? atoms ....
 proposed by Leucippus
Leucippus

Leucippus or Leukippos was the first to develop the theory of atomism ? the idea that everything is composed entirely of various imperishable, indivisible elements called atoms ? which was elaborated in far greater detail by his pupil and successor, Democritus....
 was indeterminist
Indeterminism

Indeterminism is a philosophy position that maintains that some form of determinism is incorrect: that there are events which do not correspond with determinism ....
, but then developed by Democritus
Democritus

Democritus was an Ancient Greek philosopher born in Abdera in the north of Greece. He was the most prolific, and ultimately the most influential, of the pre-Socratic philosophers; his atomic theory may be regarded as the culmination of early Greek thought....
 in determistic
Determinism

Determinism is the philosophy proposition that every event, including human cognition and behavior, decision and action, is causality determined by an unbroken chain of prior occurrences. With numerous historical debates, many varieties and philosophical positions on the subject of determinism exist from traditions throughout...
 sense. It was later (IV century b.c) that the originary atomism was took again as indeterministic by Epicurus
Epicurus

Epicurus was an Greek philosophy and the founder of the school of philosophy called Epicureanism.Only a few fragments and letters remain of Epicurus's 300 written works....
. He confirmed the reality as composed of an infinity of indivisible, inchangeable corpuscles or atoms (atomon, lit. ‘uncuttable’), but his gives weight to characterize atoms while for Leucippus they are characterized by a "figure", an "order" and a "position" in the cosmos (Aristotle, Metaphysics, I , 4, 985). They besides are creating the whole with the intrinsic movement in the vacucum productin the diverse flux of being. Their movement is influenced by the Parenklisis (Lucretius will name it Clinamen
Clinamen

Clinamen is the name Lucretius gave to a minimal indeterminacy in the motions of atoms, an unpredictable ?swerve... at no fixed place or time?....
) and that is determinated by the Chance
Chance

Chance commonly refers to:* Probability* Luck* Randomness* Contingency* Chance Chance may also refer to:In people:* Chance ...
.

Plato
Plato
Plato

Plato , was a Classical Greece Greeks philosopher, mathematician, writer of philosophical dialogues, and founder of the Platonic Academy in Ancient Athens, the first institution of higher learning in the western world....
 developed this distinction between true reality and illusion, in arguing that what is real are eternal and unchanging Forms
Theory of Forms

Plato's Theory of Forms asserts that Forms , and not the material world of change Plato's allegory of the cave, possess the highest and most fundamental kind of reality....
 or Ideas (a precursor to universals
Universal (metaphysics)

In metaphysics, a universal is what particular things have in common, namely characteristics or qualities. In other words, universals are repeatable or recurrent entities that can be instantiated or exemplified by many particular things....
), of which things experienced in sensation are at best merely copies, and real only in so far as they copy (‘participate in’) such Forms. In general, Plato presumes that all nouns (e.g., ‘Beauty’) refer to real entities, whether sensible bodies or insensible Forms. Hence, in The Sophist
Sophist (dialogue)

The Sophist is one of the late Dialogues of Plato, which was written much later than the Parmenides and the Theaetetus , probably in 360 BC....
 Plato argues that Being is a Form in which all existent things participate and which they have in common (though it is unclear whether ‘Being’ is intended in the sense of existence
Existence

In common usage, existence is the world of which we are aware through our senses, but in philosophy the word has a more specialized meaning, and is often contrasted with essence....
, copula, or identity
Identity (philosophy)

In philosophy, identity is whatever makes an entity definable and recognizable, in terms of possessing a set of qualities or characteristics that distinguish it from entities of a different type....
); and argues, against Parmenides, that Forms must exist not only of Being, but also of Negation
Negation

In logic and mathematics, negation or not is an operation on logical values, for example, the logical value of a proposition, that sends true to false and false to true....
 and of non-Being (or Difference)..

Aristotle
Ontology as an explicit discipline was inaugurated by Aristotle
Aristotle

Aristotle was a Greeks philosopher, a student of Plato and teacher of Alexander the Great. He wrote on many subjects, including physics, metaphysics, Poetics , theater, music, logic, rhetoric, politics, government, ethics, biology and zoology....
, in his Metaphysics
Metaphysics (Aristotle)

Metaphysics is one of the principal works of Aristotle and the first major work of the Metaphysics with the same name. The principal subject is "being qua being", or being understood as being....
, as the study of that which is common to all things which exist, and of the categorisation of the diverse senses in which things can and do exist. What exists, in so far as Aristotle concludes, are a plurality of independently existing substances
Substance theory

Substance theory, or substance attribute theory, is an ontology theory about Object , positing that a substance is distinct from its property ....
 – roughly, physical objects
Physical body

In physics, a physical body is a collection of masses, taken to be one. For example, a cricket ball can be considered an object but the ball also consists of many particles ....
 – on which the existence of other things
Categories (Aristotle)

Categories is a text from Aristotle's Organon that enumerates all the possible kinds of thing which can be the subject or the Predicate of a proposition....
, such as qualities or relations, may depend; and of which substances consist both of a form (e.g. a shape, pattern, or organisation), and of a matter formed (Hylomorphism
Hylomorphism

'Hylomorphism' is the philosophical theory, originating with Socrates, which conceptually identifies substance theory as matter and form. More exactly, substances are conceived as forms Inherence in matter....
). Against Plato, who taught frameworks or the theory of forms
Theory of Forms

Plato's Theory of Forms asserts that Forms , and not the material world of change Plato's allegory of the cave, possess the highest and most fundamental kind of reality....
, Aristotle holds that universals exist
Aristotle's theory of universals

Aristotle's theory of universals is one of the classic solutions to the problem of universals. Aristotle thought—to put it in a not-very-enlightening way—that universal are simply type , property , or relation that are common to their various instances....
, these do not have an existence over and above the particular things
Particular

In philosophy, particulars are concrete entitles existing in space and time as opposed to abstractions. There are, however, theories of abstract particulars or Trope ....
 which instantiate them.

Stoics
A not very different ontology was that proposed by the Stoics
Stoicism

Stoicism was a school of Hellenistic philosophy founded in Athens by Zeno of Citium in the early third century B.C. The stoics considered passionate emotions to be the result of errors in judgment, and that a Sage , or person of "moral and intellectual perfection," would not have such emotions....
, where the being is rigouously necessitated by the Logos as Providence of a world unity-totality having God in the Whole. The Stoics' philosophy is the first definite expression of the Panthesism .

Ontology topics


Some basic questions

The principal questions of ontology are "What can be said to exist?" and "Into what categories, if any, can we sort existing things?" Various philosophers have provided different answers to this question.

One common approach is to divide the extant entities into groups called categories
Category of being

In metaphysics , the different kinds or ways of being are called categories of being or simply categories. According to the Aristotle tradition, a being is anything that can be said to be in the various senses of this word....
. Of course, such lists of categories differ widely from one another, and it is through the co-ordination of different categorial schemes that ontology relates to such fields as theology
Theology

Theology is the study of the existence or attributes of a deity or gods, or more generally the study of religion or spirituality. It is sometimes contrasted with religious studies: theology is understood as the study of religion from an internal perspective , and religious studies as the study of religion from an external perspective....
, library science and artificial intelligence
Artificial intelligence

Artificial intelligence is the intelligence of machines and the branch of computer science which aims to create it. Major AI textbooks define the field as "the study and design of intelligent agents,"...
.

Further examples of ontological questions include:
  • What is existence
    Existence

    In common usage, existence is the world of which we are aware through our senses, but in philosophy the word has a more specialized meaning, and is often contrasted with essence....
    ?
  • What is God
    God

    God is a deity in theism and deism religions and other belief systems, representing either the sole deity in monotheism, or a principal deity in polytheism....
    ?
  • Is existence a property?
  • Which entities are fundamental?
  • How do the properties of an object relate to the object itself?
  • What features are the essential
    Essential

    Essential or essentials can refer to:*An essential property, which defines an entity as being a particular type of entity. See also essentialism, the philosophical view that an entity must have certain characteristics in order to belong to a certain defined group, and its counterpart, non-essentialism....
    , as opposed to merely accidental, attributes of a given object?
  • What is a physical object?
  • Can one give an account of what it means to say that a physical object exists?
  • What constitutes the identity
    Identity (philosophy)

    In philosophy, identity is whatever makes an entity definable and recognizable, in terms of possessing a set of qualities or characteristics that distinguish it from entities of a different type....
     of an object?
  • When does an object go out of existence, as opposed to merely changing
    Change

    selfref|For Wikipedia uses, see...
    ?
  • Why does anything exist rather than nothing? (This overlaps with questions in cosmology
    Cosmology

    Cosmology is study of the Universe in its totality, and by extension, humanity's place in it. Though the word cosmology is recent , study of the Universe has a long history involving science, philosophy, esotericism, and religion....
    .)


Concepts

Quintessential ontological concept
Concept

A concept is a cognition unit of meaning— an abstraction idea or a mental symbol sometimes defined as a "unit of knowledge," built from other units which act as a concept's characteristics....
s include:
  • Universals
    Universal (metaphysics)

    In metaphysics, a universal is what particular things have in common, namely characteristics or qualities. In other words, universals are repeatable or recurrent entities that can be instantiated or exemplified by many particular things....
     and Particular
    Particular

    In philosophy, particulars are concrete entitles existing in space and time as opposed to abstractions. There are, however, theories of abstract particulars or Trope ....
    s
  • Substance
    Substance theory

    Substance theory, or substance attribute theory, is an ontology theory about Object , positing that a substance is distinct from its property ....
     and Accident
    Accident (philosophy)

    Accident, sumbebekos as used in philosophy, is an attribute which may or may not belong to a subject, without affecting its essence. The use of accident has been employed throughout the history of philosophy with several distinct meanings....
  • Abstract
    Abstract object

    An abstract object is an object which does not exist at any particular time or place, but rather exists as a Type_ of thing . In philosophy, an important distinction is whether an object is considered abstract or concrete....
     and Concrete objects
  • Essence
    Essence

    In philosophy, essence is the attribute or set of attributes that make an object or substance theory what it fundamentally is, and which it has by metaphysical necessity, and without which it loses its identity....
     and Existence
    Existence

    In common usage, existence is the world of which we are aware through our senses, but in philosophy the word has a more specialized meaning, and is often contrasted with essence....


Subject, relationship, object

"What exists", "What is", "What am I", "What is describing this to me", all exemplify questions about being, and highlight the most basic problems in ontology: finding a subject, a relationship, and an object to talk about. During the Enlightenment the view of René Descartes
René Descartes

Ren? Descartes , , also known as Renatus Cartesius , was a French philosophy, mathematician, scientist, and writer who spent most of his adult life in the Dutch Republic....
 that "I think therefore I am" had generally prevailed, although Descartes himself did not believe the question worthy of any deep investigation. However, Descartes was very religious in his philosophy
Philosophy

Philosophy is the study of general problems concerning matters such as existence, knowledge, truth, beauty, justice, validity, mind, and language....
, and indeed argued that "cogito ergo sum
Cogito ergo sum

"'" , sometimes misquoted as ' , is a philosophy statement in Latin used by Ren? Descartes, which became a foundational element of Western philosophy....
" proved the existence of God
God

God is a deity in theism and deism religions and other belief systems, representing either the sole deity in monotheism, or a principal deity in polytheism....
. Later theorists would note the existence of the "Cartesian Other
Cartesian Other

The Cartesian Other is the counterpart to the Cartesian Self. According to Descartes, there is a divide intrinsic to human consciousness, such that you cannot ever bridge the space between your own consciousness and that of another....
" — asking "who is reading that sentence about thinking and being?" — and generally concluded that it must be God
God

God is a deity in theism and deism religions and other belief systems, representing either the sole deity in monotheism, or a principal deity in polytheism....
.

This answer, however, became increasingly unsatisfactory in the 20th century as the philosophy of mathematics
Philosophy of mathematics

The philosophy of mathematics is the branch of philosophy that studies the philosophical assumptions, foundations, and implications of mathematics....
 and the philosophy of science
Philosophy of science

The philosophy of science is concerned with the assumptions, foundations, and implications of science. The field is defined by an interest in one of a set of "traditional" problems or an interest in central or foundational concerns in science....
 and even particle physics
Particle physics

Particle physics is a branch of physics that studies the elementary particle constituents of matter and radiation, and the interactions between them....
 explored some of the most fundamental barriers to knowledge about being. Sociological theorists, most notably George Herbert Mead
George Herbert Mead

George Herbert Mead was an United States philosopher, sociologist and psychologist, primarily affiliated with the University of Chicago, where he was one of several distinguished pragmatisms....
 and Erving Goffman
Erving Goffman

'Erving Goffman' , was a Canada and American sociology and writer. The List of American Sociological Association presidents of American Sociological Association, Goffman's greatest contribution to social theory is his study of symbolic interaction in the form of dramaturgical perspective that began with his 1956 book The Presentation of Self...
, saw the Cartesian Other
Cartesian Other

The Cartesian Other is the counterpart to the Cartesian Self. According to Descartes, there is a divide intrinsic to human consciousness, such that you cannot ever bridge the space between your own consciousness and that of another....
 as a "Generalized Other," the imaginary audience that individuals use when thinking about the self. According to Mead
George Herbert Mead

George Herbert Mead was an United States philosopher, sociologist and psychologist, primarily affiliated with the University of Chicago, where he was one of several distinguished pragmatisms....
, "we do not assume there is a self to begin with. Self is not presupposed as a stuff out of which the world arises. Rather the self arises in the world" The Cartesian Other was also used by Sigmund Freud
Sigmund Freud

Sigmund Freud , born Sigismund Schlomo Freud , was an Austrian psychiatrist who founded the psychoanalysis of psychology. Freud is best known for his theories of the unconscious mind and the defense mechanism of Psychological repression and for creating the clinical practice of psychoanalysis for curing psychopathology through dialogue...
, who saw the superego as an abstract regulatory force, and Emile Durkheim
Émile Durkheim

?mile Durkheim was a France sociologist whose contributions were instrumental in the formation of sociology and anthropology. His work and editorship of the first journal of sociology, L'Ann?e Sociologique, helped establish sociology within academia as an accepted Social sciences....
 who viewed this as a psychologically manifested entity which represented God in society at large.

Body and environment

Schools of subjectivism, objectivism and relativism
Relativism

Relativism is the idea that some elements or aspects of experience or culture are relative to, i.e., dependent on, other elements or aspects.Common statements that might be considered relativistic include...
 existed at various times in the 20th century, and the postmodernists
Postmodernism

Postmodernism literally means 'after the modernist movement'. While "modern" itself refers to something "related to the present", the movement of modernism and the following reaction of postmodernism are defined by a set of perspectives....
 and body philosophers
Embodied philosophy

Philosophers, cognitive sciences and artificial intelligences who study embodied cognition and the embodied mind believe that the nature of the human mind is largely determined by the form of the human body....
 tried to reframe all these questions in terms of bodies taking some specific action in an environment. This relied to a great degree on insights derived from scientific research into animals taking instinctive action in natural and artificial settings — as studied by biology
Biology

Biology is a branch of the natural sciences concerned with the study of living organisms and their interaction with each other and their environment ....
, ecology
Ecology

Ecology is the science study of the distribution and Abundance of life and the interactions between organisms and their nature environment ....
, and cognitive science
Cognitive science

Cognitive science may be concisely defined as the study of the nature of intelligence. It draws on multiple empirical disciplines, including psychology, philosophy, neuroscience, linguistics, anthropology, computer science, sociology and biology....
.

The processes by which bodies related to environments became of great concern, and the idea of being
Being

In ontology being is anything that can be said to be, either Transcendence or Immanence.The nature of being varies by philosophy, given different interpretations in the frameworks of Parmenides, Leucippus, Plato, Aristotle, Plotinus, Descartes, Spinoza, Leibniz, Hegel, Heidegger, and Sartre....
 itself became difficult to really define. What did people mean when they said "A is B", "A must be B", "A was B"...? Some linguists advocated dropping the verb "to be" from the English language, leaving "E Prime
E-Prime

E-Prime, short for English-Prime, is a modified form of English language. It uses very slightly simplified syntax and vocabulary, eliminating all forms of the verb to be: be, is, am, are, was, were, been and being ....
", supposedly less prone to bad abstractions. Others, mostly philosophers, tried to dig into the word and its usage. Heidegger
Martin Heidegger

Martin Heidegger was an influential Germany Philosophy. His best known book, Being and Time, is generally considered to be one of the most important philosophical works of the 20th century....
 attempted to distinguish being and existence. Heidegger
Martin Heidegger

Martin Heidegger was an influential Germany Philosophy. His best known book, Being and Time, is generally considered to be one of the most important philosophical works of the 20th century....
 suggests that our way of being human and the way the world is for us are given by the ontological assumptions that come along with our language. These assumptions provide the context for communication: a horizon of unspoken background meanings. Because these assumptions both generate and are regenerated in our everyday interactions, the locus of our way of being is the communicative event of language in use.

Ontological approaches

Social scientists adopt one of four main ontological approaches: realism
Realism

Realism, Realist or Realistic may refer to:*Realism , the depiction of subjects as they appear in everyday life*Realism , a movement towards greater fidelity to real life...
 (the idea that facts are out there just waiting to be discovered), empiricism
Empiricism

In philosophy, empiricism is a theory of knowledge which asserts that knowledge arises from experience. Empiricism is one of several competing views about how we know "things," part of the branch of philosophy called epistemology, or "theory of knowledge"....
 (the idea that we can observe the world and evaluate those observations in relation to facts), positivism
Positivism

Positivism is a philosophy which holds that the only authentic knowledge is that based on actual sense experience. Such knowledge can come only from affirmation of theories through strict scientific method....
 (which focuses on the observations themselves, attentive more to claims about facts than to facts themselves), and post-modernism (which holds that facts are fluid and elusive, so we should focus only on our observational claims).

Prominent ontologists

  • Aquinas
  • Aristotle
    Aristotle

    Aristotle was a Greeks philosopher, a student of Plato and teacher of Alexander the Great. He wrote on many subjects, including physics, metaphysics, Poetics , theater, music, logic, rhetoric, politics, government, ethics, biology and zoology....
  • Alain Badiou
    Alain Badiou

    Alain Badiou is a prominent French philosopher, formerly chair of philosophy at the ?cole Normale Sup?rieure . Along with Giorgio Agamben and Slavoj Zizek, Badiou is a prominent figure in an anti-postmodern strand of continental philosophy....
  • Albert Camus
    Albert Camus

    Albert Camus was an Algerian-born France author, Philosophy, and journalist who won the Nobel Prize in 1957. He is often associated with existentialism, but Camus refused this label....
  • Gilles Deleuze
    Gilles Deleuze

    Gilles Deleuze , was a French philosophy of the late 20th century. From the early 1960s until his death, Deleuze wrote many influential works on philosophy, literature, film, and fine art....
  • Martin Heidegger
    Martin Heidegger

    Martin Heidegger was an influential Germany Philosophy. His best known book, Being and Time, is generally considered to be one of the most important philosophical works of the 20th century....
  • Heraclitus
    Heraclitus

    Heraclitus of Ephesus was a Pre-Socratic philosophy Greeks philosopher, a native of Ephesus, Ionia, on the coast of Asia Minor.Heraclitus is known for his doctrine of change being central to the universe, and that the Logos is the fundamental order of all....
  • Georg Wilhelm Friedrich Hegel
    Georg Wilhelm Friedrich Hegel

    Georg Wilhelm Friedrich Hegel was a German people philosopher, and with Johann Gottlieb Fichte and Friedrich Wilhelm Joseph Schelling, one of the creators of German idealism....
  • Edmund Husserl
    Edmund Husserl

    Edmund Gustav Albrecht Husserl was a philosophy who is deemed the founder of phenomenology . He broke with the positivist orientation of the science and philosophy of his day, believing that experience is the source of all knowledge, while at the same time he elaborated critiques of psychologism and historicism....
  • Roman Ingarden
    Roman Ingarden

    Roman Witold Ingarden was a Poland philosopher who worked in phenomenology , ontology and aesthetics.Before World War II, Ingarden published his works mainly in the German language....
  • Immanuel Kant
    Immanuel Kant

    Immanuel Kant was an 18th-century German Philosophy from the Kingdom of Prussia city of K?nigsberg . He is regarded as one of the most influential thinkers of modern Europe and of the late Age of Enlightenment....
  • Gottfried Leibniz
    Gottfried Leibniz

    Gottfried Wilhelm Leibniz was a Germany polymath who wrote primarily in Latin and French language.He occupies an equally grand place in both the history of philosophy and the history of mathematics....
  • Leucippus
    Leucippus

    Leucippus or Leukippos was the first to develop the theory of atomism ? the idea that everything is composed entirely of various imperishable, indivisible elements called atoms ? which was elaborated in far greater detail by his pupil and successor, Democritus....
  • 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....
  • Plato
    Plato

    Plato , was a Classical Greece Greeks philosopher, mathematician, writer of philosophical dialogues, and founder of the Platonic Academy in Ancient Athens, the first institution of higher learning in the western world....
  • Plotinus
    Plotinus

    Plotinus was a major Philosophy of the ancient world who is widely considered the founder of Neoplatonism . Much of our biographical information about him comes from Porphyry 's preface to his edition of Plotinus' Enneads....
  • W. V. O. Quine
  • Gilbert Ryle
    Gilbert Ryle

    Gilbert Ryle , was a United Kingdom philosopher, and a representative of the generation of British ordinary language philosophys influenced by Ludwig Wittgenstein's insights into language, and is principally known for his critique of Cartesian dualism, for which he coined the phrase "the ghost in the machine"....
  • Jean-Paul Sartre
    Jean-Paul Sartre

    Jean-Paul Charles Aymard Sartre , commonly known simply as Jean-Paul Sartre , was a French existentialism philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary criticism....
  • Baruch Spinoza
    Baruch Spinoza

    Baruch or Benedict de Spinoza was a Netherlands Philosophy of Iberian Jews origin. Revealing considerable scientific aptitude, the breadth and importance of Spinoza's work was not fully realized until years after his death....
  • Alfred North Whitehead
    Alfred North Whitehead

    Alfred North Whitehead, Order of Merit was an England mathematician who became a philosopher. He wrote on algebra, logic, foundations of mathematics, philosophy of science, physics, metaphysics, and education....
  • Charles Taylor
    Charles Taylor (philosopher)

    Charles Margrave Taylor, Order of Canada, National Order of Quebec, Royal Society of Canada is a Canadian philosopher from Montreal, Quebec, Canada, who has made significant contributions to political philosophy, philosophy of social science, and the history of philosophy....
  • Ludwig Wittgenstein
    Ludwig Wittgenstein

    Ludwig Josef Johann Wittgenstein was an Austrian-United Kingdom philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language....


See also

  • Applied Ontology
    Applied ontology

    Applied ontology involves the practical application of ontological concepts. This can be exceedingly difficult as ontology is a fairly abstract study....
  • Cosmology
    Cosmology

    Cosmology is study of the Universe in its totality, and by extension, humanity's place in it. Though the word cosmology is recent , study of the Universe has a long history involving science, philosophy, esotericism, and religion....
  • Epistemology
    Epistemology

    Epistemology or theory of knowledge is the branch of philosophy concerned with the nature and scope of knowledge. It addresses the questions:...
  • Foundation ontology
  • Geopolitical ontology
    Geopolitical ontology

    The geopolitical ontology, here described, has been developed by the FAO. The major goals of the geopolitical ontology are to provide a master reference for , and to offer users with the most validated and updated geopolitical information....
  • Mereology
    Mereology

    In philosophy, mereology is a collection of axiomatic first-order theories dealing with parts and their respective wholes. Mereology is both an application of predicate logic and a branch of formal ontology....
  • Meta-modeling
  • Metaphysics
    Metaphysics

    Metaphysics investigates principles of reality transcending those of any particular science. cosmology and ontology are traditional branches of metaphysics....
  • Modal logic
    Modal logic

    A modal logic is any system of mathematical logic#Formal logic that attempts to deal with notions of possibility and necessity. Traditionally, there are three "modes" or "moods" or "modalities" of the Copula to be, namely, Logical possibility, probability, and Necessary_and_sufficient_conditions#Necessary_conditions....
  • Nihilism
    Nihilism

    Nihilism is the philosophy position that value_theory do not exist but rather are falsely invented. Most commonly, nihilism is presented in the form of Nihilism#Existential_nihilism which argues that life is without meaning, purpose or intrinsic value ....
  • Ontology (computer science)
    Ontology (computer science)

    In computer science and information science, an ontology is a formal representation of a set of concepts within a Domain of discourse and the relationships between those concepts....
  • Philosophy of science
    Philosophy of science

    The philosophy of science is concerned with the assumptions, foundations, and implications of science. The field is defined by an interest in one of a set of "traditional" problems or an interest in central or foundational concerns in science....
  • Philosophy of space and time
    Philosophy of space and time

    Philosophy of space and time is the branch of philosophy concerned with the issues surrounding the ontology, epistemology, and character of space and time....
  • Philosophy of mathematics
    Philosophy of mathematics

    The philosophy of mathematics is the branch of philosophy that studies the philosophical assumptions, foundations, and implications of mathematics....
  • Physical ontology
    Physical ontology

    PrefaceThe ontology term brings the literal meaning of " study of the being ", where being is " that is " or "that exists ". The original Greek expression to the base of the ontology term is in fact t? ??ta , that means " what actually exists ", and this correct lexical meaning is paraphrasing in " study on the reality "....
  • Ontological pluralism
    Ontological pluralism

    Ontological pluralism is a philosophical expression to indicate the conceptual opposition to monism. It is the conception that sees the Being made by a plurality of more elementary beings....
  • Quantum ontology
    Quantum ontology

    Quantum ontology is based on the idea that the underlying reality of quantum mechanics fundamentally alters the nature of mankind's ontology existence....
  • Schema
    Schema

    The word schema comes from the Greek word "s???a" , which means shape, or more generally, plan. The Greek plural is "s???ata" . In English, both schemas and schemata are used as plural forms, although the latter is the standard form for written English....
  • Solipsism
    Solipsism

    Solipsism is the philosophy idea that "My mind is the only thing that I know exists." Solipsism is an epistemology or ontology position that knowledge of anything outside the mind is unjustified....
  • Taxonomy
    Taxonomy

    Taxonomy is the practice and science of classification. The word comes from the Greek language ', taxis and ', nomos .Taxonomies, or taxonomic schemes, are composed of taxonomic units known as taxa , or kinds of things that are arranged frequently in a hierarchical structure....
  • Theology
    Theology

    Theology is the study of the existence or attributes of a deity or gods, or more generally the study of religion or spirituality. It is sometimes contrasted with religious studies: theology is understood as the study of religion from an internal perspective , and religious studies as the study of religion from an external perspective....
  • Upper ontology


External links