Quine addressed this issue, first, in his (1953 [1980a], chapter 3), and then in a much larger way in his (1960, chapter 2, and 1974) and related articles. In his (1953 [1980a]) he pressed his objection to analyticity further to the very ideas of synonymy and the linguistic meaning of an expression, on which, we saw, Frege’s criterion of analyticity crucially relied. His objection is that he sees no way to make any serious explanatory sense of them. He explored plausible explanations in terms of