What makes screenplays difficult are the things that require the most discipline and care and are just not seen by most people. I'm talking about movement - screenwriting is related to math and music, and if you zig here, you know you have to zag there. It's like the descriptions for a piece of music - you go fast or slow or with feeling. It's the same.

I'm not in business to be loved, but I am in business.

Relative to the power that movie stars have, and producers and directors, I would say that even the most respected screenwriters have very little power in Hollywood. I don't think it's in the nature of the writer's profession to go after that power. Writers spend their time alone, hallucinating, writing, making these things up, while these other people are out schmoozing, making connections, meeting each other. They are trotting the corridors of power and making sure they've put their own imprints in it. And they're promoting themselves and their images, as they should.

And I think one way or another it's evident to those who work with me that as a writer, a director, a friend, as somebody's there that's very anxious to get the movie made.

Good dialogue illuminates what people are not saying

The one thing you know when you're shooting a script - and I've been on a lot of sets - is space is in a script, and the distance between the page and the stage is so enormous that it is unbelievable how even the brightest people can misread your intent or not see it altogether. Scripts have air in them. Scripts are supposed to leave things up to interpretation, but people can misread things enormously, so sometimes it's just a matter of wanting to put on the screen what you had in mind.

But time has caught up with it and I think vindicated it. Shampoo, too: very dark, very ambitious movie.