I think the idea of a "finished" picture is a fiction. I think a man spends his whole lifetime painting one picture or working on one piece of sculpture. The question of stopping is really a decision of moral considerations. To what extent are you intoxicated by the actual act, so that you are beguiled by it? To what extent are you charmed by its inner life? And to what extent do you then really approach the intention or desire that is really outside of it? The decision is always made when the piece has something in it that you wanted.
- Barnett Newman