Believe me, my children have more stamina than a power station.

My sons the same, hes terribly funny. Its a wonderful power to have. Its also fantastically disarming. Women find it unbelievably disarming. You can say the most astonishing things if youre funny. You can tell a woman that shes irresistibly attractive, but do it in such a funny way.

That's the trouble with anything which essentially has a lot of bits that are physically impossible: You're left, stuck, in the studio. And that's a shame. You're making a movie. You don't want it to stay put, you want it to be a movie - to move.

It's like going back to school. You know, autumn! Time for 'Harry Potter'.

I knew it was going to be enormous because of the number of people who bought the books, but, to be honest, I never thought it would be bigger than Bond. Never in a million years.

Ninety percent of people's nightmares is standing in front of 1,000 people. Did you know that? And having to speak. You would have thought it would have been a madman tying you up and taking your eyes out.

I had a very bad time with acid. I did that classic thing of looking in the mirror by mistake and seeing the devil. But I took it several times, because you always think that next time you might have the wonderful time that everyone else is having.