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