From the Ed Harris movie Pollock:
Lee Krasner watching Pollock paint: What's this? I see the head - the body. This isn't cubism, Jackson, because you're not really breaking down the figure into multiple views. You're just showing us one side. What is this? Free association? Automatism?
Pollock: I'm just painting, Lee.
Lee Krasner: But what are you doing, Jackson? Don't tell me you don't know what you're doing. Are you experimenting with surrealism? Is this a dream? Even if it's a dream, it's still what you see. It's life. You're not just randomly putting paint on the canvas. You're painting something. You can't abstract from nothing. You can only abstract from life - from nature.
Pollock: I am nature.