This is the most complete English edition of Kant's correspondence that has ever been compiled. The letters are concerned with philosophical and scientific topics but many also treat personal, historical and cultural matters. On one level the letters chart Kant's philosophical development. On another level they expose quirks and foibles, and reveal a good deal about Kant's friendships and philosophical battles with some of the prominent thinkers of the time: Herder, Hamann, Mendelssohn and Fichte. What emerges from these pages is a vivid picture of the intellectual, religious and political currents of the late eighteenth-century Prussia, in which there is much to be learnt about topics such as censorship, and the changing status of Jews and women in Europe. Amongst the special features of this volume are: a substantial introduction, detailed explanatory notes, a glossary, and biographical sketches of correspondents and people referred to in the letters.