Abstract
Despite significant advances in various special areas in the study of language, the question of what the basic nature of the theory of a language is remains controversial and unclear. In this paper we propose to rectify this situation and argue for a general perspective — one which only a few theorists have explicitly endorsed — by showing that it is at once theoretically illuminating and empirically plausible. This perspective consists of the following claims: that the most basic theory of a language is a theory of communication viz., of understanding and production; that a theory of communication in this sense presupposes a theory of thought; that a grammar is most fruitfully thought of as a component of a theory of communication; and that so-called theories of meaning form a rather heterogeneous group, some of which being fragments of grammars, others being theories of thought, and still others being what are sometimes referred to as theories of reference. We shall be particularly concerned with and here.