I always think of comedy as being spontaneous, and yet everything about filmmaking is not spontaneous.

This is the great luxury of not working: the moment you read a book that has nothing to do with work, you know you're really relaxed. And I have a sh*t attention span. I can't concentrate for more than five minutes.

I think all actors have a similar deal. You want some people who understand. Although it looks great - and is great - there are also shoddy moments when you feel really rotten, and when it's going well, you're not allowed to complain.

I always think of comedy as being spontaneous, and yet everything about filmmaking is not spontaneous.

I walk around talking to myself in accents. Usually people look at me like I'm a complete fruit loop.

People ask, "Do you enjoy acting?" But you only have those specific few hours to do a scene, and then you drive home and wait for six months to find out how it went. You can't go back and put in a new idea. Filming is about continuing to be alert and to think, and I find it quite exhausting. Certainly I would say that fear is a part of that.

I feel like J.K. Rowling's world is one that is owned by everyone in some ways. People have grown up with it and have such a sense of that universe that there's something kind of wonderful seeing everyone get involved.