"It's perfectly obvious that there is some genetic factor that distinguishes humans from other animals and that it is language-specific. The theory of that genetic component, whatever it turns out to be, is what is called universal grammar."

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It turns out, in fact, that 'theories of meaning' are typically not about meaning in an everyday or 'folk' sense at all. They are theories designed to compute the truth or assertibility conditions of sentences from their components.

— David E. Cooper