Dominique Sanda
Role: Lou Andreas Salomé
Erland Josephson
Role: Friedrich Nietzsche
Virna Lisi
Role: Elizabeth Nietzsche
Robert Powell
Role: Paul Rée
Michael Degen
Role: Karl Andreas
Elisa Cegani
Role: Franziska Nietzsche
Umberto Orsini
Role: Bernard Foester
Carmen Scarpitta
Role: Malvida
Nicoletta Machiavelli
Role: Amanda
Amadeo Amodio
Role: Dr. Dulcamara
Mircha Carven
Role: Wolfgang
Philippe Leroy
Role: Peter Gast
Catharina Dahlin
Role: Prostitute
Elisabeth Wiener
Role: Greta
Anita Höfer
Role: Prostitute at Station
Clara Algranti
Role: Teresa
Robert José Pomper
Role: Young Venetian Gondolier/Christ
Renato Scarpa
Role: Psychiatrist
Francesca Muzio
Role: Maria
Heinz Kreuger
Role: University Rector
Hélène Beaucour
Role: Madam at Colonia Bordello (uncredited)
Lars Bloch
Role: German Friend (uncredited)
Ritza Brown
Role: Young Sicilian Prostitute (uncredited)
Guido Cerniglia
Role: Guest in Malvida's House (uncredited)
Carlo Colombo
Role: Bonnet (uncredited)
Clara Colosimo
Role: Trude (uncredited)
Geoffrey Copleston
Role: Guest in Malvida House (uncredited)
Elvira Cortese
Role: Maid (uncredited)
Catharina Dahlin
Role: Prostitute (uncredited)
Patrizia Dordi
Role: Professor Staudenmayer's Singer (uncredited)
Jean Dudan
Role: Professor Staudenmayer (uncredited)
Enzo Fabbri
Role: Sick Man in Ambulance (uncredited)
Marina Hedman
Role: Prostitute (uncredited)
Piero Morgia
Role: Young Man in Pub (uncredited)
Julia Sebastian
Role: Aunt Augusta (uncredited)
Dieter Stengel
Role: Left-Wing Militant (uncredited)
Marcella Theodoli
Role: Brothel Madame (uncredited)