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 was in the bath at the time, and my dad came running in and said, 'Guess who they want to play Harry Potter!?' and I started to cry. It was probably the best moment of my life.

If you're on a date and somebody comes up and says, "Oh, I loved you in Harry Potter," it's a bit weird, because you suddenly start thinking, "Oh, God. Is this weird for the other person I'm here with, or is this weird for my family?" But generally speaking, I don't really think because I was thrown into it so young and kind of always had that, it's just something you get used to. And most of the time... It was interesting.

If I die on a film set when I'm 80, I'll be happy with that.

We would choreograph [ with Paul Dano] before each scene [in Swiss Army Man] and very quickly got to a place where we could improvise physically in scene and know that the other person would respond in character appropriately. So that [dynamic] was a lot of fun.

My friends have always called me 'Mr. Thorough,' in that when I get into something, I become obsessed with it.

I don't want to say I'll never play someone with a cockney accent, but I think I would be irritated by me doing it.