A.J. Ayer, Sir quotes

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The traditional disputes of philosophers are, for the most part, as unwarranted as they are unfruitful. The traditional disputes of philosophers are, for the most part, as unwarranted as they are unfruitful.

A.J. Ayer, Sir

philosophical

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The criterion which we use to test the genuineness of apparent statements of fact is the criterion of verifyability. We say that a... - MORE The criterion which we use to test the genuineness of apparent statements of fact is the criterion of verifyability. We say that a sentence is factually significant to any given person, if, and only if, he knows how to verify the proposition which it purports to express--that is, if he knows what observations would lead him, under certain conditions, to accept the proposition as true, or reject it as being false.... To make our position clearer, we may formulate it in another way. Let us call a proposition which records an actual or possible observation an experiential proposition. Then we may say that it is the mark of a genuine factual proposition, not that it should be equivalent to an experiential proposition, or any finite number of experiential propositions, but simply that some experiential propositions can be deduced from it in conjunction with certain other premises without being deducible from those other premises alone.

A.J. Ayer, Sir

verifiability | meaning | experience

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There never comes a point where a theory can be said to be true. The most that one can claim for any theory is that it has shared ... - MORE There never comes a point where a theory can be said to be true. The most that one can claim for any theory is that it has shared the successes of all its rivals and that it has passed at least one test which they have failed.

A.J. Ayer, Sir

theory

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I am using it [the word 'perceive'] here in such a way that to say of an object that it is perceived does not entail saying that i... - MORE I am using it [the word 'perceive'] here in such a way that to say of an object that it is perceived does not entail saying that it exists in any sense at all. And this is a perfectly correct and familiar usage of the word.

A.J. Ayer, Sir

perception | language

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The ground for taking ignorance to be restrictive of freedom is that it causes people to make choices which they would not have ma... - MORE The ground for taking ignorance to be restrictive of freedom is that it causes people to make choices which they would not have made if they had seen what the realization of their choices involved.

A.J. Ayer, Sir

ignorance

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To say that authority, whether secular or religious, supplies no ground for morality is not to deny the obvious fact that it suppl... - MORE To say that authority, whether secular or religious, supplies no ground for morality is not to deny the obvious fact that it supplies a sanction.

A.J. Ayer, Sir

authority

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While moral rules may be propounded by authority the fact that these were so propounded would not validate them. While moral rules may be propounded by authority the fact that these were so propounded would not validate them.

A.J. Ayer, Sir

morality

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