"I do not consider myself a Cubist either because I have come to the conclusion that cubes are not always made for expressing the thought of the brain and of the feeling of the spirit.. .I capture all these impressions [the visual sensations, Picabia sensed in the modern city] without any hurry to transfer to the canvas. I let them rest in my brain and then, when I'm visited by the spirit of creation, I improvise my paintings just as a musician improvises his music."
January 1, 1970
https://en.wikiquote.org/wiki/Francis_Picabia