One of the most characteristic (and certainly most original) claims of the dominant movement in contemporary British philosophy, to which we shall refer as the philosophy of ordinary language, is that traditional philosophical discourse has usually been logically improper because it has depended upon systematic misuses of certain expressions in ordinary language and that philosophy is a legitimate cognitive discipline only if it is concerned with the description of the actual use of language. To substantiate this claim, the philosopher of ordinary language has had to establish at least the following two general philosophical theses, which together seem to constitute the hard core of original doctrine in the philosophy of ordinary language. First, that the meaning of an expression is its use and not its referent or what it corresponds to. Second, that the description of the uses of certain expressions in language is not merely a study of words but genuinely solves the same problems which traditional philosophy had tried to solve through other methods.

The purpose of this article is to examine two major arguments in favour of the philosophical thesis that the meaning of an expression is its use, and not its referent or what it corresponds to. A second philosophical thesis which is closely related to the first is that the study of the ordinary, “actual” uses of certain expressions is not of purely linguistic interest but in fact is a way, probably the only proper way, of solving the problems of traditional philosophy; in the sequel to the present article, we shall examine one major argument in favour of this second thesis. Both theses occupy a place of central importance in the dominant movement in contemporary British philosophy, to which we shall refer as “the philosophy of ordinary language”. Together they seem to constitute the basis of the most characteristic claim of this movement: that traditional philosophic discourse is logically improper and that philosophy is a legitimate cognitive discipline only if it is concerned with “the spatial and temporal phenomenon of language” by describing “the actual use of language”. Both theses are necessary for the justifi cation of this more general claim.