The great fun of doing new plays is that people have no idea what's going to happen next. That goes quite soon, as people start talking about it, and the only way you can keep hold of that is genuinely to keep changing it.

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

One of the great joys of my job is that you spend a huge amount of time investigating different areas of literature.

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.

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.

When I got married, my mother was very surprised. She said: What on earth is going on? I thought you were gay?

I'm not really a director for hire. You read these scripts and go, 'This is a really great script, but Paul Greengrass would make this so much better than me.' I usually say, 'I know who would be good for this. It's not me.