Although Martin Heidegger is undeniably one of the most influential philosophers of the twentieth century, among the philosophers who study his work there is considerable disagreement over what might seem to be basic issues: Why is Heidegger important? What did his work do? This volume is an explicit response to these differences, and is unique in bringing together representatives of many different approaches to Heidegger's philosophy. The essays discuss topics that are central to Heidegger's work, and the contributors also address the presuppositions that guide their understanding of Heidegger.