In Infinite Regress, David Joselit considers the plurality of identities and practices within Duchamp's life and art between 1910 and 1941, conducting a synthetic reading of his early and middle career. There is not one Marcel Duchamp, but several. Within his oeuvre Duchamp practiced a variety of modernist idioms and invented an array of contradictory personas- artist and art dealer, conceptualist and craftsman, chess champion and dreamer, dandy and...