L'Important c'est d'aimer

كلايوس كينسكي as Karl-Heinz Zimmer Nadia Vasil as Female Director Frédérique Barral as Girl in the brewery (uncredited) Manu Pluton as Man at the gym (uncredited) Jacques Boudet as Robert Beninge Claude Legros as Manuel Rosenthal Claudine Beccarie as Girl at the Orgy (uncredited) Katia Tchenko as Myriam, prostitute Romy Schneider as Nadine Chevalier Gabrielle Doulcet as Madame Mazelli Michel Robin as Raymond Lapade Olga Valéry as Woman with the Dildo Michel Berreur as Second man in the brewery (uncredited) Paul Bisciglia as Assistant Director Roger Blin as Servais' Father Nicoletta Machiavelli as Luce Lapade Jerry Di Giacomo as English transvestite Fabio Testi as Servais Mont Sylvain Lévignac as First Man in the Brewery Eric Vasberg as Third man in the brewery (uncredited) Jacques Dutronc as Jacques Chevalier Guy Delorme as Mazelli henchman (uncredited) Michel Such as Electrician Gérard Zimmermann as Léonard Claude Dauphin as Mazelli

Christopher Frank Novel, Screenplay Albina du Boisrouvray Producer Georges Casati Production Manager Didier Lavergne Makeup Artist Jean-Pierre Kohut-Svelko Production Design Ricardo Aronovich Director of Photography Andrzej Żuławski Director, Screenplay Georges Delerue Original Music Composer Catherine Leterrier Costume Design Claude Carliez Stunt Coordinator Élisabeth Rappeneau Script Supervisor Léo L. Fuchs Executive Producer