'A lucid well-organized expose of the theory and the manner of its development.' Times Literary Supplement This remarkable book is a biography of an unusual kind. It is at once the life of a mind at work, and the story of a long and intricate process of discovery. It takes the form of a stern and uncompromising analysis, and yet the author is so much in tune with his subject that the personality, and even the feelings, of Sigmund Freud (1856-1939) and his contemporaries emerge from that analysis. Readers will also sense the effect of the frightening enlargement of the known area of human unhappiness that Freud's work revealed.