This book deals with foundational issues in Phenomenology as they arise in the smoldering but tense dispute between Husserl and Heidegger, which culminates in the late 1920s. The work focuses on three key issues around which a constellation of other important problems revolves. More specifically, it elucidates the phenomenological method of the reductions, the identity and content of primordial givenness, and the meaning and character of categorial intuition. The text interrogates how Husserl and Heidegger understand these points, and clarifies the precise nature of their disagreements....