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