I'm the only kid in the world who doesn't want an eighth Harry Potter book.

I have described myself as being 'gently eccentric.'

I'm never going to be in something as commercially successful as 'Harry Potter' ever again. It's impossible. So that gives me incredible freedom to go off and make the slightly off-the-wall films that I want to make.

We sing a lot of the soundtrack in this film [Swiss Army Man] - me and Paul Dano - and on the last day of filming we had to just get into the back of our sound mixer's van and record a really crappy, rough version of the singing then. For some reason that was one of the most fun days.

What I learned is that acting is to a large extent about trying to stave off self-doubt long enough to be natural and real onstage.

I just got asked by another journalist 'Are you a feminist?' and I was just like... Is there a strange thing at the moment where you have to come out as a feminist? I've been asked if I'm a feminist so many times recently, and I'm just like 'Yes, yes, for God's sake, yes! Is there something that I give off that says I'm not?'

My idea of relaxation is not lying down by a beach. I have to move around, do stuff. Though I'm a massive quiz show person.