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'fragments/reports', 'On the Heavens' and 'works'
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2 ideas
5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence
19102
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Bivalence is a regulative assumption of enquiry - not a law of logic [Peirce, by Misak]
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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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