Occultist, Scientist, Prophet, Charlatan - C. G. Jung has been called all these things and after decades of myth making, is one of the most misunderstood figures in Western intellectual history. This book is the first comprehensive study of the origins of his psychology, as well as providing a new account of the rise of modern psychology and psychotherapy. Based on a wealth of hitherto unknown archival materials it reconstructs the reception of Jung’s work in the human sciences, and its impact on the social and intellectual history of the twentieth century. The book creates a basis for all future discussion of Jung, and opens new vistas on psychology today.