I- languages and T- sentences

This chapter argues that liar sentences reveal a fundamental problem for the project of characterizing linguistic meaning in terms of truth. It further argues that weak-logic solutions to the Foster problem for Davidsonian theories are exacerbated by the Liar. According to the chapter, liar sentences have no truth conditions, and any theory that has its instances of the T-schema as a theorem is just false. The author urges that liar sentences illustrate a deep difficulty for truth-theoretic conceptions of meaning for Human Languages and that we should find a different conception of meaning according to which expressions of Human Languages-I-Languages-are not among the truth-evaluable things.