A detailed biography and at the same time an in-depth study of the work of Sigmund Freud was compiled by his attending physician, friend and like-minded person. Max Schur presents to readers not only a deeply suffering patient, but also a person of great spiritual strength and endurance, to whom even his own suffering served as material for scientific research. The book is valuable not only for eyewitness impressions, but also for Freud's extensive correspondence in it, accompanied by comprehensive comments.