Not to say that you should be constantly trying to change the world, but I think it's important to know that whatever we do has an implication and has an effect, and because of that it is political.

It's one of the most beautiful scripts [Brokeback Mountain] I've ever read, and it was Ang Lee, and at the time Heath [Ledger] was a friend of mine - before we even shot the movie - and always sort of alluring to me.

Not to say that you should be constantly trying to change the world, but I think it's important to know that whatever we do has an implication and has an effect, and because of that it is political.

I think also what's interesting is that Maggie [Gyllenhaal] knows how much the choices that I make reflect what's going on in my life. Admittedly, probably, as my sister, and as someone who loves me - like, she can't wait to see become a father.

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.

Working with Jim Sheridan for instance, we did this movie Brothers. Jim will ask anybody - we'll get a delivery on set, and like the poor delivery guy will be like, "Here's your pizza," and he'll be like, "Come over here. Come here. I want to ask you a question. Do you think this is real? What do you think? Should we do another take?" And they're like, "I, uh, you want your pizza?" There's no shame in everybody's ideas. There's no shame in somebody not knowing.

I think, when someone say, "When did you feel like an actor?" it's those moments when I feel like, "I'm an actor, wow." That's an extraordinary moment for me. So it's not like I walk around going, "I'm an actor."