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Monday, December 7, 2009

"Language,Truth and Logic" by Alfred Jules Ayer,1936


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Metaphysics is impossible because metaphysical statements are meaningless.
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A sentence is factually significant if and only if there is a method of verification an observer could adopt to determine the truth or falsity of the sentence ;
when experience cannot settle an issue,the issue has no factual meaning.
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The propositions of philosophy are not factual,but linguistic ;
they are not factual reports,but either definitions of words in use or expressions of the logical implications of such definitions.
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Value statements and statements declaring duties are neither true nor false ;
they express the feelings of the speaker.
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