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.

I'm happy - at times - making films. I'm certainly unhappy not making films.

The most terrifying fact about the universe is not that it is hostile but that it is indifferent, but if we can come to terms with this indifference, then our existence as a species can have genuine meaning. However vast the darkness, we must supply our own light.

You have not yet learned that in this life you have to be like everyone else: the perfect mediocrity--no better, no worse. Individuality is a monster and it must be strangled in its cradle to make our friends feel comfortable.

I don't think that writers or painters or filmmakers function because they have something they particularly want to say. They have something that they feel. And they like the art form; they like words, or the smell of paint, or celluloid and photographic images and working with actors. I don't think that any genuine artist has ever been oriented by some didactic point of view, even if he thought he was.

Don't do anything. Just tolerate me and let me suffer, knowing how you feel.

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