This detailed, meticulous study addresses the confusion surrounding Heidegger scholarship. Cutting through all mysticism associated with the question of being, Sheehan uncovers the phenomenological bases of the 'early' and 'late' Heidegger, paying special attention to their Aristotelian heritage. Sheehan’s argument, at its core, is persuasive: he contends that the obsession with being has obscured the reality that the center of Heidegger’s entire project is the 'clearing,' wherein being takes place. Sheehan attaches a number of key Greek and Heideggerian terms to the idea of the clearing—for instance, the Logos that keeps it open or its becoming-one’s-own (Eigentum) in the event (Ereignis). The book is insightful not only as a contribution to Heidegger studies but also as a source of inroads into ancient Greek philosophy, informed by a new understanding of Heidegger's thought. Summing Up: Essential. Graduate students, researchers, and faculty.