I genuinely was just such a fan of the books. When I heard that this was on the cards, I've got to do this; I've got to get involved with this. I'm such a Philip Pullman fan and actually his philosophies, morals and the way he looks at the world. He does what he does brilliantly as a writer. He writes children's stories with major adult themes and major ideas about making the right choices.

If I was being perfectly honest, which I'm not going to be, I think the movie touches on a lot of things that we all went through... the first kiss, which was more than a first kiss for Harry [Eden], and those electrifying moments when you're a teenager that form who you are as a human being. I think those, for me, are what Baillie captured so well.

It’s not the job of an actor to judge your character.

I can't really dress rock 'n' roll any more because I'm the wrong side of 40, but I want that to be the fashion.

Anybody can leap off a building.

Good scripts are hard to find.

Well the thing is, once you have a snow leopard it's difficult to go back. Everything is going to be slightly disappointing. It's very telling what your choice would be. Because that's probably how you see yourself. We used to play that game as kids and you'd say if you were animal what would you be and it'd usually be the opposite of what it should be. But all animals have got their virtues. You know, cockroaches got virtues.