Opinion
Overview
 
In general, an opinion is a subjective
Subjectivity
Subjectivity refers to the subject and his or her perspective, feelings, beliefs, and desires. In philosophy, the term is usually contrasted with objectivity.-Qualia:...

 belief, and is the result of emotion
Emotion
Emotion is a complex psychophysiological experience of an individual's state of mind as interacting with biochemical and environmental influences. In humans, emotion fundamentally involves "physiological arousal, expressive behaviors, and conscious experience." Emotion is associated with mood,...

 or interpretation of fact
Fact
A fact is something that has really occurred or is actually the case. The usual test for a statement of fact is verifiability, that is whether it can be shown to correspond to experience. Standard reference works are often used to check facts...

s. An opinion may be supported by an argument
Argument
In philosophy and logic, an argument is an attempt to persuade someone of something, or give evidence or reasons for accepting a particular conclusion.Argument may also refer to:-Mathematics and computer science:...

, although people may draw opposing opinions from the same set of facts. Opinions rarely change without new arguments being presented. However, it can be reasoned
Inductive reasoning
Inductive reasoning, also known as induction or inductive logic, is a kind of reasoning that constructs or evaluates propositions that are abstractions of observations. It is commonly construed as a form of reasoning that makes generalizations based on individual instances...

 that one opinion is better supported by the facts than another by analysing the supporting arguments. In casual use, the term opinion may be the result of a person's perspective
Perspective (cognitive)
Perspective in theory of cognition is the choice of a context or a reference from which to sense, categorize, measure or codify experience, cohesively forming a coherent belief, typically for comparing with another...

, understanding
Understanding
Understanding is a psychological process related to an abstract or physical object, such as a person, situation, or message whereby one is able to think about it and use concepts to deal adequately with that object....

, particular feelings, belief
Belief
Belief is the psychological state in which an individual holds a proposition or premise to be true.-Belief, knowledge and epistemology:The terms belief and knowledge are used differently in philosophy....

s, and desires
Desire (emotion)
Desire is a sense of longing for a person or object or hoping for an outcome. Desire is the fire that sets action aflame. The same sense is expressed by emotions such as "craving" or "hankering". When a person desires something or someone, their sense of longing is excited by the enjoyment or the...

.
Quotations

If all mankind minus one were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind.

John Stuart Mill, On Liberty (1859)

To refuse a hearing to an opinion, because they are sure that it is false, is to assume that their certainty is the same thing as absolute certainty. All silencing of discussion is an assumption of infallibility. Its condemnation may be allowed to rest on this common argument, not the worse for being common.

John Stuart Mill, On Liberty (1859)

I agree with no man's opinion. I have some of my own.

Ivan Turgenev, Fathers and Sons, ch. 12

New opinions are always suspected, and usually opposed, without any other reason but because they are not already common.

John Locke, Essay on the Human Understanding

Quot homines tot sententiae: suo quoque mos. As many opinions as there are men; each a law to himself.

Terence(c.195-159 BC), Phormio, 454

The world is governed much more by opinion than by laws. It is not the judgment of courts, but the moral judgment of individuals and masses of men, which is the wall of defense around property and life.

William Ellery Channing, reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895), p. 440.

It is more true to say that our opinions depend upon our lives and habits than to say that our lives depend upon our opinions, which is only now and then true.

Frederick William Robertson, reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895), p. 440.

 
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