John Rawls is undoubtedly the most significant American philosopher in the field of political philosophy and moral philosophy. His "History of Moral Philosophy," which circulated as a manuscript for a long time and had an almost mythical reputation, combines his lectures at Harvard University, through which an entire generation of both American and continental philosophers has passed. In it, Rawls connects a re-reading of the classics of moral philosophy with a redefinition of moral philosophy as such. Through subtle interpretations of canonical texts by Hume, Leibniz, Kant, and Hegel, both a history of moral philosophy and a perspective on current questions and problems emerge.