 The Heidelberg Academy (“Heidelberger Forum Edition”) and the academy of sciences in Göttingen initiated a project of gathering in one standard edition the unconnected variety of distinguished editions, commentaries, and translations of the writings of Karl Jaspers. The project is chaired by Otfried Höffe, together with the editors Thomas Fuchs, Jens Halfwassen, and Reinhard Schulz, with the cooperation of Anton Hügli, Kurt Salamun, und Hans Saner. The planned project consists of three major divisions, altogether comprising 50 volumes: works (I. 1–27), estate (II. 1–11), and letters (III. 1–12). While the first division covers all the works that were printed and published during Jaspers’s lifetime, the second and the third encompass selections from the vast material of his posthumous papers, some already published and others that have never appeared. The set’s general objective is reviving the investigation of the philosophical, contemporary, and cultural preconditions for Jaspers’s thinking, and also tracing the history of his impact. The work on this edition at the Universities of Heidelberg and Oldenburg is projected to take 18 years and is the fruit of cooperation with the Karl Jaspers Foundation in Basel. The editors will have recourse to the unpublished writings kept at the German Literary Archives in Marbach and the 11,000 volumes of the Jaspers Research Library in the future Karl Jaspers House in Oldenburg. Over and above the commentary itself, the edition is designed to provide new impulses for research on the philosopher and to enable the debates on present-day cultural and political issues to profit from a species of thinking that can be described as interdisciplinary and cosmopolitan in the best sense of those terms. For now, the following volumes exist: