Marcel Duchamp by Man Ray, 1930 (via)
"If a shadow is a two-dimensional projection of the three-dimensional world, then the three-dimensional world as we know it is the projection of the four-dimensional Universe. "— Marcel Duchamp
(28 July 1887 – 2 October 1968), the painter and mixed media artist, was associated with Cubism, Dadaism and Surrealism, though he avoided any alliances. Duchamp’s work is characterized by its humor, the variety and unconventionality of its media, and its incessant probing of the boundaries of art. His legacy includes the insight that art can be about ideas instead of worldly things, a revolutionary notion that would resonate with later generations of artists.