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.

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.

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.

The truth of the matter is, every film is imperfect. It's the nature of the beast. One of the things that people ask me all the time is, what's the difference between theater and film, and one of the biggest differences is, in the theater you always get another go.

I spent a little time in Germany as a schoolboy learning German, and it's a country I knew very well, spent a lot of time in. I knew the history very well. I've always wanted to do a piece of work about the post-war period, of one sort or another.

If I wanted to work financially, I would have made a series of different choices. I do get offered lots of movies which you could make a lot of money out of. And I always say, 'Why would I do that, when someone else could do it much better than me? Why would I want to do an action picture? Why?

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