Festschrift for Dieter Henrich on his 90th birthday. "People do not just live; they must lead their lives based on the knowledge of themselves." This insight is at the beginning of Dieter Henrich's lectures on thinking and selfhood published in 2007. The philosophy of the post-war period has been significantly shaped by his interpretation of the fundamental fact of self-consciousness, allowing for the exploration of issues that arose around 1800. The contributions gathered in this volume—created for Dieter Henrich's 90th birthday—discuss and expand upon this philosophical approach. They explore its significance in neighboring disciplines (theology, sociology, literary and art studies) and its impact on encounters and events of the time. Contributions include those from: Manfred Frank, Rolf-Peter Horstmann, Martin Mulsow, Kunihiku Nagasawa.