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Ideas for 'fragments/reports', 'Sententia on 'De Caelo'' and 'Rationality in Action'

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4 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

3809	If complex logic requires rules, then so does basic logic [Searle]

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

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

5. Theory of Logic / I. Semantics of Logic / 1. Semantics of Logic

3810	In real reasoning semantics gives validity, not syntax [Searle]