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9027 | A sentence is logically true if all sentences with that grammatical structure are true [Quine] |
Full Idea: A sentence is logically true if all sentences with that grammatical structure are true. | |
From: Willard Quine (Philosophy of Logic [1970], Ch.7) | |
A reaction: Quine spends some time on the tricky question of deciding which parts of a sentence are grammatical structure ('syncategorematic'), and which parts are what he calls 'lexicon'. I bet there is a Quinean argument which blurs the boundary. |