Abelard's investigations into the philosophy of language are of great interest not only with respect to the history of philosophy, but also with respect to systematic considerations. These investigations, however, are not readily accessible. They offer nothing to a reader who wants to glean information quickly from them. A thorough study is required, and this itself requires extraordinary patience. The purpose of this chapter is to contribute to the project of making Abelard's investigations into the philosophy of language accessible to the general philosophical community.

Unlike contemporary philosophers, Abelard does not conceive of philosophy of language as a distinct or separate branch of philosophy. Indeed, as he conceives of philosophy, it is a genus with just three species, namely, logic, physics, and ethics (LNPS 506.18–19). If we want to identify his contribution to what we now recognize as issues in philosophy of language, therefore, we must extract his views from his discussion of that branch of philosophy in which they are embedded, namely, logic or, as he also refers to it, dialectic (hereafter I shall use the terms “logic” or “dialectic” synonymously).