The British tradition, basically, is to go to the character. And the Hollywood tradition, shall we say, is basically to take the character to the performer.

I'm very director oriented.

By the time I came to do the final ones [Harry Potter's film], I was working on something that was massively successful. There was a huge difference in indulgence and all sorts of stuff. A very big difference in peoples' attitudes. They were very pleased with themselves. In human terms, it was quite interesting to see the difference.

Also the wonderful thing about film, you can see light at the end of the tunnel. You did realize that it is going to come to an end at some stage.

I felt, you know, body and soul, as it were. But, of course, I mean, I - at that age, I didn't think in terms of being professional. I didn't know anything about it. That happened later.

Elephant Man [movie] was much more difficult physically. This had a couple of days. It was quite tricky. I had my leg strapped up behind me and I am a little older now. It was all marvelous, though. He [Bong Joon-ho] is one of the most fabulous directors in the world.

I think one of the things that is important, for me, though a lot of people would disagree with me, is that you be founded in theater so that you understand what an audience is, what kind of an animal it is and how to play with it. How to have fun with it, how to sympathize with it, all the things that an audience is. I don't think you're going to find that out unless you do theater.