I've always felt kind of safe on stage, protected. I've talked to other performers about this and they feel the same things, particularly in the live arena. I never get nervous going on stage to do a play. Doing film or television I'll have more butterflies.

It's always nice to be challenged.

I never make a distinction between doing a film in Hollywood or doing a film independently. It's just the story. It's always the story for me. The constants are that it should challenge me and I shouldn't repeat myself. And the story should always be a story worth telling.

Sociopath is a word that has sort of become shorthand for psychopath and there's a distinct difference, it's interesting if you look it up. Sociopath if you look at the medical definition, the profile of a sociopath is that they are supremely intelligent people that are also pathological liars, they have no moral structure and there is one more, they have no compassion or empathy for other people.

With some films you can sort of slide in, get a haircut and you're in.

I come from a long line of teachers. Not only did I not go into the family business; I had an aborted law career and I played in bands. 'Disco Pigs' was my first professional acting experience.

I feel very lucky to be making good work still. The confidence of youth, or that sort of competitiveness you get when you're 22 or 23, the impatience - that's probably been tempered. Hopefully I'm slightly better company.