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