I remember Paul [Dano] had said at one point that when he finished this film [Swiss Army Man] was the strongest he'd ever been just from lugging me around for [several] weeks.

As far as I can tell, most actors' main motivation is self-doubt and neuroses.

The best thing I've learned is, if you're going out, never go out alone - you leave yourself vulnerable. If you've got someone else there you trust, they can say, be wary of that person. I probably used to be too trusting of people.

I was having a hard time at school, in terms of being crap at everything, with no discernible talent.

Acting is really instinctual and I think you can overanalyse what you're doing. A lot of it has to be based on instinct.

I think Harry Potter's very important. Every opportunity I will get for the rest of my life, I would not have got if it wasn't for Harry Potter. And it would be height of ingratitude if I was ever anything but proud to be associated with these films.

My job to make sure that thing is kick-ass - takes the mold, jumps on it, throws glitter all over it, smashes it, kicks it around, and drops the mic. If we don't do that, then we deserve not to have a hit.