Poverty is about people lacking the tools they need to get on in life. And solving it is about tackling educational failure, antisocial behaviour, debt problems and addiction, and of course it's about work.

When I'm getting ready for a movie, let's just say my diet is 'The Antisocial Diet.' I don't go to restaurants. I don't eat what I really want to eat. I don't eat much. I eat small things frequently. Lots of protein and greens. And I don't eat with people, because there's a tendency to get social and then to overeat.

With 'The Social Network,' I got into it at first because frankly I thought there was a cool courtroom drama to be had with the intellectual properties. And then what further drew me in was that the most extraordinary social networking device ever created was created by the world's most antisocial person. I liked that story.

I've never hosted a party in my life, not even my own birthday party. I'd feel really uncomfortable saying, 'Hey everybody, let's celebrate me!' But I'm not antisocial. I don't hate people.