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Ideas for 'fragments/reports', 'fragments/reports' and 'Mr Strawson on Logical Theory'

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4 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 / C. Ontology of Logic / 1. Ontology of Logic

22437

Logical languages are rooted in ordinary language, and that connection must be kept [Quine]

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 / E. Structures of Logic / 1. Logical Form

22434

Reduction to logical forms first simplifies idioms and grammar, then finds a single reading of it [Quine]