Vincent Perez as Denis Diderot

Fanny Ardant as Madame Therbouche

Josiane Balasko as Baronne d'Holbach

Michel Serrault as Le Cardinal

Arielle Dombasle as Madame de Jerfeuil

Christian Charmetant as Chevalier de Jerfeuil

Françoise Lépine as Madame Diderot

François Lalande as Baron d'Holbach

Bruno Todeschini as Marquis de Cambrol

Arnaud Lemaire as Marquis de Lutz

Audrey Tautou as Julie d'Holbach

Vahina Giocante as Angélique Diderot

Yan Duffas as Abraham

Véronique Vella as La Cousine de Jerfeuil

Eric Savin as Chef de la police

Thierry Nzeutem as Mohamed

Kevin Felix-Lassa as le fils de Jerfeuil

Jean Pommier as le serviteur

Eric Barthes as le conseiller de Mme Therbouche

Micheline Massin as une servante turque

Gaëlle Vincent as une servante turque