As an audience member and as an actor I much prefer to find ambiguity.

When I was four, I just wanted to drive, I collected toy cars. Where does that sort of thing come from? In hindsight you go, 'Oh, liked it because of this.' Maybe it's just the wheel.

'Hunger' definitely changed my life, in terms of being recognized by filmmakers, since that was very much a filmmakers' film.

We moved to Ireland when I was two and we settled in Killarney, Co Kerry. Where we were living in Germany is very industrial and very grey and my parents wanted to have countryside around for my sister and I to grow up in.

We feel a lot of pressure about looking silly or appearing weak, whatever that means, or being a failure. You have to keep in your head: what's the worst that can happen?

There's no point thinking, 'Well, my life's certainly worked out, I've got all the answers.' It would be wrong for me to say that I don't get seduced by certain things. That things don't become tempting.

Trying to identify and understand, as opposed to judging, is very important for me, in approaching characters.