Drawing on Deleuze's early works of the 1960s, this article investigates the ways in which Deleuze challenges our traditional linguistic notion of sense and notion of truth. Using Frege's account of sense and truth, this article presents our common understanding of sense and truth as two separate dimensions of the proposition where sense subsists only in a formal relation to the other. It then goes on to examine the Kantian account, which makes sense the superior transcendental condition of possibility of (...) truth. Although both accounts define sense as merely the form of possibility of truth, a huge divide cuts across a simple formal logic of sense and a transcendental logic: transcendental logic discovered a certain genetic productivity of sense, such that a proposition always has the kind of truth that it merits according to its sense. In pursuit of this genetic productivity of sense, Deleuze applies different models of explanation: a Nietzschean genealogical model of the genetic power of sense, and in The Logic of Sense a structural model combined with elements of Stoic philosophy. This article follows Deleuze in setting up a new and very complex notion of sense, which he radically distinguishes from what he terms ‘signification’, that is, an extrinsic, linguistic or logical, condition of possibility. Rather, sense has to be conceived as both the effect and the intrinsic genetic element of an extra-propositional sense-producing machine. (shrink)