I am really the victim of other people's imagination.

Very broadly speaking, you can put directors into two areas: One for whom you work, and the other with whom you work. And I prefer the latter, for obvious reasons.

The most difficult thing about painting is the self-discipline. When I finish a job, I give myself a few days, but then I have to discipline myself quite fiercely if I want to do some painting that's worthwhile. Otherwise, you're just doodling. It's much easier when you're just told what you have to do.

If I hadn't been a part of [Harry Potter] I would have been deeply upset.

I think I'd rather do [acting] in the real place. It requires different things, working with green screen, but its an imaginative exercise anyway, the whole business of acting, so it just gives you a bit more to feed the imagination. Unless it's really silly, just two of you stuck in a space with nothing but green screen that's got to be pretty difficult.

The great joke is that a realist is an optimistic pessimist. That's very witty. Whether it's truthful or not, that I don't know.

If you put on an Oscar Wilde [play], it will interest those who are interested in Oscar Wilde. But it won't interest anybody else, because they won't get that wit.