About the Book:Expressivism–the sophisticated contemporary incarnation of the noncognitivist research program of Ayer, Stevenson, and Hare–is no longer the province of metaethicists alone. Its comprehensive view about the nature of both normative language and normative thought has also recently been applied to many topics elsewhere in philosophy — including logic, probability, mental and linguistic content, knowledge, epistemic modals, belief, the a priori, and even quantifiers.