I think it was pretty obvious early on that we had both come with kind of the same attitude of "Let's just [jump] in," and neither of us was going to be precious about it. I feel like the thing that we learned is, weirdly, the most intimate thing or a very intimate thing you can do to somebody is hold their tongue with your fingers. When Paul [Dano] is making me talk [in Swiss Army Man].

And the people I'm best friends with on the films are not generally the actors.

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 absolutely don't relate to being beaten down my whole life - I had amazing opportunities at a young age - but there is still in many, many people's minds the notion that I'll never be able to escape Harry Potter.

I have a very busy personality.

I enjoy any type of physical transformation. I enjoy working with the hair and makeup department and I enjoy watching people be very good at their jobs.

I've worked every day since I was 10. I don't know how to do anything else. There is nothing else I'd rather be doing.