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René Clair started his career in the 1920s, and he is considered to be one of the pioneers of French cinema. Clair's films are often characterized by their use of humor and surrealism, and they have been praised for their innovative visual style. Clair's most famous films include "A nous la liberté" (1931), "The Ghost Goes West" (1935), and "The Rules of the Game" (1939).