I got used to [ Lars Von Trier] doing the narration for 'Dogville' and 'Manderley.' And I said to him I do these narrations for you but you never put me in a film! So he called my bluff and put me in 'Melancholia' and I was thrilled about that.

I mark a script like an exam, and I try not to do anything under 50 per cent. Similarly with the part. And also film is a peculiar thing, parts don't necessarily read in script form anything like as well as they can do when it comes to materialising.

People say you never retire in this [film] business and I say, well, not until they retire you.

What I like about [Berthold] Brecht, it's very interesting. When Helene Weigel came over and somebody talked about Lotte Lenya and said "well, she wasn't alienating." And Weigel said "No, no, no. Why, Lotte Lenya was so true - who cares?" She said: "Berti only developed the theory of alienation in order to stop bad acting." I heard her say that. Now that's brilliant.

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.

I do what interests me when I'm invited and do it as well as I know how and try to get better. That's all.

I am not an enormous believer in research being the be-all and end-all. I get suspicious when I read about actors spending six months in a clinic, say, in order to play someone who is sick.