This paper examines Heidegger's critique of Husserl in its earliest extant formulation, viz. the lecture courses Ontologie from 1923 and Einführung in die phänomenologische Forschung from 1923/4. Commentators frequently ignore these lectures, but I try to show that a study of them can reveal both the extent to which Heidegger remains committed to phenomenological research in something like its Husserlian form, and when and why Heidegger must part with Husserl. More specifically, I claim that Heidegger rightly criticizes Husserl's account of (...) 'equipmental objects', and that he is especially unsatisfied with the terminology in which Husserl presents his phenomenological analyses, not only of 'equipment', but of other types of entities as well. However, it will also emerge that Heidegger's own phenomenological work presupposes the performance of what Husserl calls the 'epoch ', the method of 'bracketing' natural knowledge. In this way, Heidegger's sometimes very severe critique must be understood as an internal critique. (shrink)