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Ideas for 'fragments/reports', 'Letters to Lelong' and 'Penguin Dictionary of Philosophy'

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5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence

6889	Vagueness seems to be inconsistent with the view that every proposition is true or false [Mautner]

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

6023	Every proposition is either true or false [Chrysippus, by Cicero]