Movies are always in a state of locomotion. You start with a general idea of how it should feel and then you find you've got a runaway train. You have to race to catch up: the movie is telling you what it wants to become, and when that happens there's no greater feeling.
I think that the perceived downs in my own career come from just managing my time and not feeling that I have enough time for my family or my friends. You could put that in the personal life category but it's all one category because I've got to balance my family.
I don't go through a torturous intellectual process to decide what to direct. I know what I want to direct the second I read something or hear a story. I just know when it grabs me in a certain way I want to direct it. And then I spend the next four to six months trying to talk myself out of it, because directing is really hard! But it's true, I know essentially when and what I want to do next... it's an undeniable feeling I get and it's not the same feeling I get when I wind up producing something.
Remember, science fiction's always been the kind of first level alert to think about things to come. It's easier for an audience to take warnings from sci-fi without feeling that we're preaching to them. Every science fiction movie I have ever seen, any one that's worth its weight in celluloid, warns us about things that ultimately come true.
