I first decided that I wanted to act when I was 9. And I was at a very bizarre prep school at the time, to say high Anglo-Catholic would be a real English understatement.

Films don't take as long as people think. 'Harry Potter,' people always used to say, 'Well, my God, do you ever get any time to yourself?' I think I did, in 'Harry Potter,' over a 12 year period I did five days. So it's not exactly exhausting.

I think [ Lars Von Trier] is a fantastic filmmaker. No question. You've got to be ready for him. He's sharp and he's got a sharp tongue and I love that. He doesn't mind it back.

We all have our limitations.

I do what interests me when I'm invited and do it as well as I know how and try to get better. That's all.

There may be arrangements to have me retired but I don't know. Things happen that I enjoy doing, and as long as I enjoy doing them I'll go about doing them, I guess.

I find it difficult to say, like "which child do you prefer the most", and its a sort of surface choice. I've never known how to quite answer that one adequately.