Abstract
Attentive readings of Deleuze’s works alongside the projects of his teachers show that they often share a common problem or set of problems. One of the most innovative and influential of these projects is the work of Jean Wahl. Wahl’s analysis of French existential phenomenology, here analyzed through a representative essay published in 1950, focuses on the problem of the pre-personal, pre-subjective elements of thinking and worldly existence. Deleuze’s philosophical project, already visible in his early essays on Bergson, is a critique of the phenomenological presuppositions that determine this problem in terms of negation.