Combining Philosophers
Ideas for Reiss,J/Spreger,J, A.J. Ayer and Sextus Empiricus
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5 ideas
11. Knowledge Aims / B. Certain Knowledge / 1. Certainty
5183
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Only tautologies can be certain; other propositions can only be probable [Ayer]
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11. Knowledge Aims / B. Certain Knowledge / 2. Common Sense Certainty
1889
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If an argument has an absurd conclusion, we should not assent to the absurdity, but avoid the absurd argument [Sext.Empiricus]
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11. Knowledge Aims / B. Certain Knowledge / 5. Cogito Critique
19461
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Knowing I exist reveals nothing at all about my nature [Ayer]
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19459
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To say 'I am not thinking' must be false, but it might have been true, so it isn't self-contradictory [Ayer]
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19460
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'I know I exist' has no counterevidence, so it may be meaningless [Ayer]
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