It was a lot of fun to play a character [in Swiss Army Man] with no inhibitions, and with no knowledge of the world, and who comes into the world kind of like a blank slate. It means there's no template or blueprint for how you need to play certain scenes.

You never want to be forced to do something. But the world around you starts to influence you in ways you never expected.

It's mainly about working hard and proving to people you're serious about it, and stretching yourself and learning. The mistake a lot of actors make, particularly young ones, is allowing themselves to feel that they're the finished articles, the bee's knees, and it's not true.

I'm also a fan of ridiculously coloured and patterned socks.

I feel very English in a suit. There's something about being in a suit abroad, particularly in America, that feels empowering.

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'.

People tell me I look mournful. They say, "Cheer up, Dan, it's not that bad!" Sometimes, I just look into space, which freaks people out. If I was ever required to do anything other than look haunted, I could. I'm a happy person.