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Ideas for 'fragments/reports', 'Logic (Encyclopedia I)' and 'Leibniz:Body,Substance,Monad'

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6 ideas

5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens

8078	Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]

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

21595

Excluded middle is the maxim of definite understanding, but just produces contradictions [Hegel]

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

5. Theory of Logic / L. Paradox / 3. Antinomies

15628

The idea that contradiction is essential to rational understanding is a key modern idea [Hegel]

15629

Tenderness for the world solves the antinomies; contradiction is in our reason, not in the essence of the world [Hegel]

15630

Antinomies are not just in four objects, but in all objects, all representations, all objects and all ideas [Hegel]