Marcel Duchamp the Broken Arm", followed soon after. His "Fountain", a urinal signed with the pseudonym "R. Mutt", shocked the art world in 1917. "Fountain" was selected in 2004 as "the most influential artwork of the 20th century" by 500 renowned artists and historians. In 1919, Duchamp made a parody of the "Mona Lisa" by adorning a cheap reproduction of the painting with a mustache and goatee. To this he added the inscription "L.H.O.O.Q.", a phonetic game which, when read out loud in French quickly sounds like ""Elle a chaud au cul"". This can be translated as "She has a hot ass,"
Marcel Duchamp U.S. Customs officials mistook them for aviation parts and attempted to collect import duties on them. In 1913, Duchamp withdrew from painting circles and began working as a librarian in the Bibliothèque Sainte-Geneviève to be able to earn a living wage while concentrating on scholarly realms and working on his "Large Glass". He studied math and physics – areas where exciting new discoveries were taking place. The theoretical writings of Henri Poincaré particularly intrigued and inspired Duchamp. Poincaré postulated that the laws believed to govern matter were created solely by the minds that "understood" them and that no theory could