Means Quotes - page 94
Well, Mondrian is absolute, and is pure, and those are real aspirations of our [American Abstract Expressionism art]. When I say 'pure', I don't mean 'clean'. I don't think Mondrian himself did; I knew him when he was here [New York] during the war. He went to an exhibition by the Surrealist, Tanguy, and was asked what he thought, and he said he would like Tanguy's pictures better if they were dirtier, that for him they were to clean.... I think he meant that when they were to 'clean', they were essentially lifeless, statuesque, unrevised. As for me, I must say, Mondrian's painting is intensely rhythmic, warm, passionate - restricted as the means ostensibly seem to me.
Robert Motherwell