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What Is Knowledge?
The A Priori 179 H The Principles of Logic
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A. J. Ayer analytic analytic proposition answer Antony Flew argument assert behavior believe body brain causal Causal Principle cause Chapter claim color concept consider contradiction course criterion deduced defining characteristics definition empirical ethical everything evidence example exist experience explain fact false feel H. H. Price happens human idea identical imagine inference kind knowledge language Law of Non-contradiction laws of nature logically impossible logically possible look matter meaning meaningful meaningless mental events meta-ethical mind necessary never not-A observe occur ostensive definition pain particular perhaps person persuasive definition phenomenalist Philosophy physical objects Plato predict premises priori problem properties proposition question reality reason refer relation rule self-contradictory sense sense-data sense-experiences sentence shape simply someone sometimes state-of-affairs statement Suppose surely synthetic talk teleological argument tell theory things true truth universe verbal verify word