The idea of "analyticity"—or truth by virtue of meaning—can be understood in two different ways. On the one hand, it might stand for an epistemic notion, for the idea that mere grasp of the meaning of a sentence suffices for knowledge that it is true. On the other hand, it might stand for a metaphysical notion, for the idea that a statement owes its truth value completely to its meaning, and not at all to "the facts." We may call the first notion "epistemic analyticity" and the second "metaphysical analyticity." On the face of it, these are distinct notions that subserve distinct philosophical programs. Willard Van Orman Quine, whose writings are largely responsible for the contemporary rejection of analyticity, failed to distinguish between them; as a result, many philosophers came to assume that the two notions stand or fall together. However, it is the moral of...