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'fragments/reports', 'Material Beings' and 'Essays on Intellectual Powers 4: Conception'
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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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The 'Law' of Excluded Middle needs all propositions to be definitely true or definitely false [Inwagen]
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