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A Quote by Willard Van Orman Quine on books, logic, and study

If pressed to supplement Tweedledee's ostensive definition of logic with a discursive definition of the same subject, I would say that logic is the systematic study of the logical truths. Pressed further, I would say that a sentence is logically true if all sentences with its grammatical structure are true. Pressed further still, I would say to read this book.

Willard Van Orman Quine (1908 - )
Source: Philosophy of Logic by Willard Van Orman Quine
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