Look at the Coen brothers. All their minor characters are as interesting as their protagonists. If the smaller characters are well-written, the whole world of the film becomes enriched. It's not the size of the thing, but the detail.

I worked with Steven Spielberg on 'AI,' and his level of preparation was extraordinary. He told me there was a time at the beginning when he was a bit more spontaneous and went over budget, and it absolutely wrecked his head. When you look at the power and assuredness of his movies, it makes sense that he works out so much in advance.

I don't want people poking around in my private stuff. They've no business in it. My work is what I give to people, that's my job, and that's where it stops.

Once we start shooting, it's in there. You're trying to get into a place where you rise to the work, rather than make it manageable or make it work for you.

I loved teaching. And I always used to say that acting was just something I did purely on my own terms, and that if I had to make a living from it there would be too much pressure.

My grandfather played a mandolin, so I got my hands on that. Then on down to a banjo, and I found I couldn't play any kind of soft or mournful music with that so I took up the fiddle in my late 20s or early 30s - and that was far too late. But it keeps me off the streets. It has been a love of mine since I was 17 maybe.

I don't plan in terms of career ambitions. The only career ambition I have is to work with people who are going to bring you up and elevate your performance. They'll let you know things that you didn't know already and bring you places that you might not have gotten to otherwise.