It's quite a dangerous career move to go wilfully on making films that may not find a distributor.

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 an actor is very like a sportsman. You have periods where you're in terrific form. Everything you touch seems to work, and come right. And other times, when you're working really hard, it's okay, but it isn't scintillating.

It's an immensely competitive business, and I can tell you the older you get, the parts are fewer, and the people who are proven performers are greater.

Life is full of ironies and paradoxes.

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.

In the end, the game is the same. Football is still football. Now, they may play with different formations, they may have a different idea of training, but the game doesn't alter. I don't mind how any performer - indeed, why should I? How arrogant of me if I did? - manages to get to what they have to get to. It doesn't matter how you get there, as long as it isn't going to destroy other people on the way.