When you're having conversations about actors, you realize these same conversations have happened about you. If you want to make a film for $5m, then you cast A, B and C, but if you want $20m, you won't be able to cast them, you need X, Y and Z.

I don't want to be disrespectful to people who are incredible at their craft, but the truth is, if I didn't get paid for it, I wouldn't act. The best-paying jobs are usually the worst films. You're a very small cog in a big machine.

With directors, some have a kind of in-built ability to just know how to work with actors and get the best out of actors, and some don't have a clue about acting. I think it'd be a good idea if directors put themselves in front of the camera, or even went on a six-week drama course, just to know a little bit about what that feels like.

At the end of the day, my life isnt about other peoples work. Ive got to stop giving stuff away. Ive got my own stories to tell, and a great need to tell them. Ive got these images, these thoughts in my head, and I need to find a way to cope with them.

Its different being a director. I suppose, especially if its a story youve written and you feel compelled to tell, in some ways its a lot easier than acting because youre orchestrating the piece. As an actor, sometimes youre trying to second-guess what people want.

What's my dilemma here? Am I making entertainment or am I making art? What am I saying? At the end of the day, cinema is entertainment for millions of people, but for me it's expression.

All you've got to do is turn up and have a few facial tics and be a lunatic and throw someone around the room or blow their brains out and people think it's good acting.