A painting that doesn't shock isn't worth painting.

Marcel, no more painting; go get a job.

Dada was an extreme protest against the physical side of painting. It was a metaphysical attitude.

All painting, beginning with Impressionism, is antiscientific, even Seurat. I was interested in introducing the precise and exact aspect of science, which hadn't often been done, or at least hadn't been talked about very much.

In the 'Nude Descending a Staircase,' I wanted to create a static image of movement: movement is an abstraction, a deduction articulated within the painting, without our knowing if a real person is or isn't descending an equally real staircase.

'Art or anti-art?' was the question I asked when I returned from Munich in 1912 and decided to abandon pure painting or painting for its own sake. I thought of introducing elements alien to painting as the only way out of a pictorial and chromatic dead end.