For an artist interested in the abstract and messing with meaning, Marcel Duchamp's philosophy on the purpose of art is surprisingly poetic and spiritual.

Marcel Duchamp is a keen old (62 ... shapes was a revelation as well as a shock to his contemporaries. Related to cubism and to movies as well, it seemed to point one new way of painting things ...

For the first time in 20 years, a version of the snow shovel that changed the course of art history over a century ago appears at auction — only at Christie’s.

16 x 20 in. (40.6 x 50.8 cm.) ...