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.

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

It's disingenuous to say that criticism doesn't get to you or you don't hear it or that you ignore it. When everybody says, 'That's crap. I hated that,' you hear it. But it's much, much worse when they're right: when you feel that it is an absolute piece of tosh. I made the film I wanted to make, so you just have to find a way of getting over it.

I would love to do something for TV... I wanna do 'Kavalier & Clay' on HBO as an eight-parter. It'll be so much better as a series, honestly.

I think it's absolutely fascinating that in Berlin the parliament can discuss actively the role of their soldiers in Afghanistan because is it still possible, literally, for a German soldier to take up arms.

You [as an actor] have a responsibility to Jonathan's book and you have a responsibility to talk about a subject that is going to be, whether it's contentious or not, it's going t bring up a huge, emotional response from people. A lot of people will say they are ready or they're not ready.

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.