According to Wikipedia: "In the idiosyncratic Laughter: An Essay on the Meaning of the Comic, Bergson develops a theory not of laughter itself, but of how laughter can be provoked (see his objection to Delage, published in the 23rd edition of the essay). He describes the process of laughter (refusing to give a conceptual definition which would not approach its reality), used in particular by comics and clowns, as the caricature of the mechanism nature of humans (habits, automatic acts, etc...