I think I'm always very naïve. With 'Kill Your Darlings' and 'Horns', I'm like, "Why wouldn't everybody love this?" But I guess it's going to divide people in some ways. But if you're willing to go with it and suspend your disbelief, you're going to get something amazing and something unlike anything else.

I always feel that if you put me in a room with a director and a writer and let me talk about the script, I can give a good account of myself.

The idea the actors are the most important people on a film set I think is very stupid. Actors are the most replaceable people there. There are literally millions of us. There's very few people that can operate a steady-cam. The numbers are a lot, lot fewer for that, you know?

I sort of try to read the books when they come out impartially and not make up my mind, but the fact is when I was reading the sixth, 'Harry Potter And The Half-Blood Prince', there were bits in there where I was going, 'God, I would love to do that because it's so good'.

I see myself doing Harry Potter films as long as I'm enjoying it and as long as they are going to challenge me as an actor. I want to be an actor - it's my aspiration - so I want to do other films. I want to write something and I want to direct something!

I am a frighteningly thorough person.

I've learnt a lot about certain things but you also learn through your own experience.