It centres on the life of the entomologist Jean-Henri Fabre and his total devotion to studying insect behavior, travelling from Avignon to Paris, from Paris to his death in Sérignan. He is honoured by the French president Raymond Poincaré and his patience, obstinacy and knowledge are also recognised by Napoleon III, the publisher Charles Delagrave and the philosopher John Stuart Mill. They reach their climax in his book, Souvenirs entomologiques.
Pierre Fresnay
Élina Labourdette
André Randall
Georges Tabet
Pierre Bertin
Espanita Cortez
France Descaut
Olivier Hussenot
Denise Kerny
Paul Bonifas
Jacques Emmanuel
Pierre Magnier
Guy Haurey
Andrée Lafayette
Henry Laverne
Solange Varenne
Pierre Moncorbier
Hubert Noël
Albert Culloz
Catherine Culloz
Jean-Pierre Maurin
Patrick Dewaere
Yves-Marie Maurin
Elisabeth Hardy
Fernand Blot
Pierre Derome
Roberto Rossellini
Roger Vincent