Pasteur
Guitry reprises his role as Pasteur which he played successfully at the Vaudeville Theatre in 1919.
Obsada
André Marnay
Doctor
François Rodon
Little Joseph Meister
Louis Gauthier
Poggiale
Pierre Huchet
Servant (uncredited)
Armand Lurville
The first witness
Julien Bertheau
Student (uncredited)
Gaston Dubosc
President of the Academy of Medicine
Camille Beuve
Joseph Lister (uncredited)
Pierre Labry
Doctor
Henry Bonvallet
Sadi Carnot, President of the Republic
Louis Maurel
Jules Guérin
Charles Vissières
Frémy, old doctor (uncredited)
Sacha Guitry
Louis Pasteur
Maurice Schutz
Grandfather
José Squinquel
Émile Roux
Jean Périer
Doctor