Dominique Sanda

Character: Lou Andreas Salomé

Erland Josephson

Character: Friedrich Nietzsche

Robert Powell

Character: Paul Rée

Virna Lisi

Character: Elizabeth Nietzsche

Michael Degen

Character: Karl Andreas

Elisa Cegani

Character: Franziska Nietzsche

Umberto Orsini

Character: Bernard Foester

Philippe Leroy

Character: Peter Gast

Carmen Scarpitta

Character: Malvida

Nicoletta Machiavelli

Character: Amanda

Amadeo Amodio

Character: Dr. Dulcamara

Elisabeth Wiener

Character: Greta (credited as Elisabeth Winer)

Roberto Bruni

Character: Professor Julius Longbehn

Mircha Carven

Character: Wolfgang

Clara Algranti

Character: Teresa

Robert José Pomper

Character: Young Venetian Gondolier/Christ

Renato Scarpa

Character: Psychiatrist

Francesca Muzio

Character: Maria

Anita Höfer

Character: Prostitute at Station (credited as Anita Hofer)

Heinz Kreuger

Character: University Rector

Vinicio Diamanti

Character:

Hélène Beaucour

Character: Madam at Colonia Bordello (uncredited)

Lars Bloch

Character: German Friend (uncredited)

Ritza Brown

Character: Young Sicilian Prostitute (uncredited)

Guido Cerniglia

Character: Guest in Malvida's House (uncredited)

Carlo Colombo

Character: Bonnet (uncredited)

Clara Colosimo

Character: Trude (uncredited)

Geoffrey Copleston

Character: Guest in Malvida House (uncredited)

Elvira Cortese

Character: Maid (uncredited)

Catharina Dahlin

Character: Prostitute (uncredited)

Patrizia Dordi

Character: Professor Staudenmayer's Singer (uncredited)

Jean Dudan

Character: Professor Staudenmayer (uncredited)

Enzo Fabbri

Character: Sick Man in Ambulance (uncredited)

Marina Hedman

Character: Prostitute (uncredited)

Piero Morgia

Character: Young Man in Pub (uncredited)

Julia Sebastian

Character: Aunt Augusta (uncredited)

Dieter Stengel

Character: Left-Wing Militant (uncredited)

Marcella Theodoli

Character: Brothel Madame (uncredited)