Full Cast
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Sacha Guitry
Louis Pasteur
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Maurice Schutz
Grandfather
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José Squinquel
Émile Roux
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Jean Périer
Doctor
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André Marnay
Doctor
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Pierre Labry
Doctor
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Armand Lurville
The first witness
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Camille Cousin
The second witness
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Henry Bonvallet
Sadi Carnot, President of the Republic
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Gaston Dubosc
President of the Academy of Medicine
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François Rodon
Little Joseph Meister
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Louis Maurel
Jules Guérin
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Louis Gauthier
Poggiale
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Pierre Athon
Student
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Pierre Huchet
Servant (uncredited)
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Camille Beuve
Joseph Lister (uncredited)
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Julien Bertheau
Student (uncredited)
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Gaston Allain
Student (uncredited)
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Félix Clément
Student (uncredited)
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Jean Francey
Student (uncredited)
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Pierre Monda
Little boy (uncredited)
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Charles Vissières
Frémy, old doctor (uncredited)
