I paint people, not because of what they are like, not exactly in spite of what they are like, but how they happen to be.
Lucian FreudThe painting is always done very much with [the model's] co-operation. The problem with painting a nude, of course, is that it deepens the transaction. You can scrap a painting of someone's face and it imperils the sitter's self-esteem less than scrapping a painting of the whole naked body.
Lucian Freud