'The domain of biography, too, must become ours . . . The riddle of Leonardo da Vinci's character has suddenly become transparent to me. That, then, would be the first step in biography.' - Sigmund Freud, letter to Carl Gustav Jung, October 1909
'Freud's Leonardo changed the art of biography forever. Henceforth none would be complete without a rummage through the subject's childhood origins.' - Oliver James
Preface to 1922 Edition, Editor's Note, Chapters 1 -6
Sigmund Freud (1856-1939). The founding father of psychoanalysis, Freud is one of the most influential thinkers of the modern era.