To me Donnie Darko was about adolescence. And about how, as soon as you start to grow up and you sort of move out into the world, you realize everything is so trippy. That anything can be anything.

I promise that, one day, everything's going to be better for you.

As Uta Hagen would say, there's the representational actor and the presentational actor. My sister [Maggie Gyllenhaal] came up to me recently after she saw this movie, Southpaw, the movie I did, and she thought there was this exploration of that type of presentation, and a bit of representation as well, if I could be totally honest, where she was deeply moved.

When I look at that now, all I think about is what a master [David Fincher] I was working with, and all of the things I could have watched and learned - and I didn't. And how, now, in my career, how I would love to have a ton of takes.

Romance is important, but to have a friend you can use as a mirror, who can give you an objective response, that's what's really important.

On a spiritual level, on a place where you want to be a better human being and listen more, I try. I joke, but it has. I mean, I don't consider myself a card-carrying Buddhist, you know. But I do believe deeply in the ideas, and I think anytime you have interest in anything, it somehow humbles you.

Sometimes love is calm and easy and sometimes it's just plain dirty.