Marcel Duchamp (1887-1968), the French-American painter and sculptor, changed the definition of art in the 20th century. Through his unconventional use of subjects such as the bottlerack and the urinal, he attempted to destroy the mystique of taste and the concept of aesthetic beauty. One of the founders of American Dada, his works have been associated with cubism and surrealism. This anthology of articles by and about Duchamp, together with illustrations of his works, explores not only the essence of his art, but also his contributions to areas as diverse as film, music, humour, eroticism and chess.