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'fragments/reports', 'On the Nature of Acquaintance' and 'Procedural republic and unencumbered self'
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3 ideas
5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
8078
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Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
6023
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Every proposition is either true or false [Chrysippus, by Cicero]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / c. Names as referential
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The only real proper names are 'this' and 'that'; the rest are really definite descriptions. [Russell, by Grayling]
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