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 late eighteenth century Prussia, in which there is much to be learned about topics such as censorship and the changing status of Jews and women in Europe.