Well, there are three different processes of making a film, of course. They're sort of re-written three times. You write it to start with, and then you shoot it and you re-write it while shooting and you sort of re-write it as you edit.

You go through a process of refinement and getting rid of the excesses of your early youth in terms of your excitement about what theatre can do.

I categorically resist this idea that films are supposed to be autobiographical and the only stories you tell are about your own life.

Is it appropriate still for a German to have a gun? I only use that as an example of a country that's still deeply involved and engaged in the conversations about how to come to terms with the past. Certainly for that country, it's not forgotten.

I've never been to Hollywood. I can count the number of times I've been to Los Angeles on my hands. I've never made a movie there and I've never been there for working reasons. The only reason to go there is for silly awards shows.

I love test screenings. Some directors don't, I know. But I love it. I think it's because I come from the theatre and in the theatre, previews are where you really have to listen to the audience and really feel how they're responding. I found our test screenings incredibly useful.

With journalism, films always have to be to do with some personal statement of your own. As a general rule, I resist that. In the States, a question that kept coming up was this: how can you, as a man, talk about three women?