I'm not afraid of dying tomorrow, only of being killed.

Take a stress pill and think things over-- HAL in 2001

I will say that the God concept is at the heart of 2001 but not any traditional, anthromorphic image of God. I don't believe in any of Earth's monotheistic religions, but I do believe that one can construct an intriguing scientific definition of God, once you accept the fact that there are approximately 100 billion stars in our galaxy alone, that each star is a life-giving sun and that there are approximately 100 billion galaxies in just the visible universe.

It's a passion when you're doing it for other people and you're doing it for the people around you making the film and the people who are going to see the film, and the giving. When you start thinking about you doing it for some sort of self-gain, then I think it becomes an obsession. It becomes a negative experience.

Have you ever had a single moment's thought about my responsibilities?

Either you care, or you don't. There's no in-between. And if you care, then go all of the way.

You're constantly changing man. But the film's not changing. The film stays the same. That's the beautiful aspect of it.