The fear of messing up is what makes you work harder!

Ladies and babies, and mortgages, for that matter, can all wait. Acting has done a strange thing to me, though. I often sit there, thinking, 'I love this, but I wouldn't put my daughter on the stage.'

It's the weird thing Eton does - you're at school next to lords and earls and, in my case, Prince William, so you end up being used to dealing with those sorts of people.

I find that what doubt does, or fear, is it makes you come up with as many ideas as you possibly can. And on film that works 'cause you're then handing over that fear to the director, who has to make sense of all those options!

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 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.

If you've loved something and then in some ways you become a part of it, you just don't want to be the one that screws it up!