Marcel Duchamp in PerspectiveBest known for cheeky conceptual works like his signed urinals (R. Mutt) and his graffitioed Mona Lisa Marcel Duchamp (1887 1968) was also an extraordinary painter and sculptor (Nude Descending a Staircase) who changed the language of twentieth century art and reigns with Picasso and Matisse as one of its greatest influences. Joseph Masheck has compiled a sampler of the best writing on Duchamp, with pieces that include Duchamp's obituary from