We are all racing towards death. No matter how many great, intellectual conclusions we draw during our lives, we know they're all only man-made, like God. I begin to wonder where it all leads. What can you do, except do what you can do as best you know how.

It's quite interesting, looking back at the first one [film about Harry Potter], nobody knew whether or not it was going to be successful as a film. The books were of course already very successful, but that's happened before, where the books were successful and the films weren't at all. But it turned out that they were.

You can see areas where maybe you got a bit lazy, perhaps, or you see when you were really on form. I think an actor is very like a sportsman in that respect. You have periods where you're in terrific form.

You have to learn to cut your cloth accordingly. But it seems to be a human weakness. Once you start making a lot of money, you just join in with everyone else. It's like the banks, and we've seen what happens there.

I think you can get better in mathematics on a school level, but when you're talking about being a mathematician, I think that's definitely a gift of genes or whatever.

I loved working with [ Lars Von Trier], but I've done two films before, so I was quite used to him.He's a man of incredible moods of course, but he's also a hugely perceptive man, and there's no getting away from that. And he's able to put that perception into something like film, so we're very lucky.

People are not what they seem to be according to their looks.