Combining Philosophers

Ideas for Philolaus, Chrysippus and Baruch de Spinoza

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3 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]

20309

If our ideas are adequate, what follows from them is also adequate [Spinoza]

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

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