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.
More Quotes from Willard Van Orman Quine:
Confusion of sign and object is original sin coeval with the word.Willard Van Orman Quine
Meaning is what essence becomes when it is divorced from the object of reference and wedded to the word.
Willard Van Orman Quine
Language is a social art.
Willard Van Orman Quine
We do not learn first what to talk about and then what to say about it.
Willard Van Orman Quine
Language is conceived in sin and science is its redemption.
Willard Van Orman Quine
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Based on Topics: Books Quotes, Logic QuotesBased on Keywords: discursive, grammatical, supplement
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