I think the most important thing is to, without belligerence, stand up for what want. Argue compellingly if someone tries to change your script. Yeah, legally they can if they want to. But rather than give up, as some of the writers do, and just wail about how your script got rewritten, it's much more difficult - but well within the realm of possibility - to argue very sincerely, calmly, and reasonably from your point of view, such that the director or the producer might decide, "All right, let's do it that way."

People would say, "Well yeah, if I wrote action films, if I wrote the trash that you write, I could make millions too. But I want to write my real movie about these Guatemalan immigrants, and how they hid under a truck for 300 miles." And that's fine. I'd love to make that film too, but to dismiss everything I did just because it's action seems wrong.

Every director should take an acting class. At least one. You know, you panic with actors. It's like, "Okay, this is back in college, I know how to talk to these guys. I know their vocabulary, and I get what they're saying back to me." So basically to learn the vernacular of acting, that's very important.

I don't mind women who want to act. That's fine. It's odd that men want to act, in that there's still a degree of vanity associated with it.

An action film can have too much action; picture an equaliser on a stereo, with all the knobs pegged at 10. It becomes a cacophony and is, ultimately, quite boring.

I have a shoebox: for ideas, fragments, snatches of conversation I hear. I scrawl it down, throw the scraps in the box. Every time I start a new script I start picking through the pieces. Suddenly you get five pieces together and think: this is almost the first Act of a movie, if I flesh it out a bit.

I think a lot of people - by the time I came back with a script I liked, which took me many years, they'd forgotten who I was. Doors all the time are slamming, you meet friends that you've had for years, you'd go to the studio, and they'd say things to indicate clearly that they hadn't read it, or that they'd had their assistant sort of skim it. They wouldn't buy it. They wouldn't make it.