Being the youngest, I constantly have that insecurity of being the youngest, which ultimately is probably my drive. in a lot of ways. In terms of as an artist, the way we could communicate as a family very clearly was through movies and through acting, and when things became complicated with all of our own personalities, that's where we are most clear. I think that's also where we are most brutal with each other as well.

My mum and dad are pretty amazing chefs and they spent most of my childhood cooking really extravagant things for my sister and me.

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.

What made me most courageous was that I realized I had to try to let go of that stereotype I had in my mind, that bit of homophobia, and try for a second to be vulnerable and sensitive. It was f**kin' hard, man. I succeeded only for milliseconds.

I've never had sex with boxers on and it's an odd thing to watch actors do. That's not saying I haven't tried... I just don't recommend it!

Sometimes you need an anchor, whatever it might be. You need a space to connect. So often you get into a way of doing things.

Peter Sarsgaard, he's an extraordinary actor, and I would say that Peter has really brought into my life and my sister's life a sense of presence as an actor that I never really understood or knew about until I met him. They've been together for a very long time, and he introduced me to the idea of the presentation.