I thought I was an actor playing a wizard. But really, I was a wizard playing an actor.

I've always thought that as long as directors and casting directors don't see me as just Harry Potter, I'll be OK. People have shown a lot of faith in me, and I owe them a huge debt. They're letting me prove that I'm serious about this.

It's really good to talk about it [ hydraulic penises and prosthetic butts], and it's very gratifying when people ask us about the other aspects of the film [Swiss Army Man], but [those things] are part of the movie and they're important and hilarious, a very fun part of the movie, so there's no sense from us of not wanting to talk about that. I think it's exciting that those things exist in a film that is also very heartfelt and emotional and profound.

Harry Potter star Daniel Radcliffe has confessed that until recently, he thought the 16-year-old fellow tween idol [Justin Bieber] was a female. 'I only heard Justin Bieber for the first time two weeks ago. I genuinely thought it was a woman singing. I'd never heard it before. Is it big in England yet?'

I don't know what to do with it. I'm very fortunate to have it, and it gives you room to maneuver. But the main thing about having money is it means you don't have to worry about it. And that for me is a lovely thing. It's not for fast cars and hookers.

I like the idea of being a youngish parent. So I've got energy to play football even though they'll be better than me by the time they're four.

I think honesty is the most heroic quality one can aspire to.