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Ideas for 'The Discourses', 'fragments/reports' and 'Philosophy of Logic'

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3 ideas

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

1312	If everything is and isn't then everything is true, and a midway between true and false makes everything false [Aristotle on Heraclitus]

9024	Excluded middle has three different definitions [Quine]

5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic

10012

Quantification theory can still be proved complete if we add identity [Quine]