A film needs more than you can give it in a lifetime.

Nothing is as dangerous as a sure thing.

You're free to speculate as you wish about the philosophical and allegorical meaning of the film—and such speculation is one indication that it has succeeded in gripping the audience at a deep level—but I don't want to spell out a verbal road map for 2001 that every viewer will feel obligated to pursue or else fear he's missed the point.

I’ve never been certain whether the moral of the Icarus story should only be, as is generally accepted, ‘don’t try to fly too high,’ or whether it might also be thought of as ‘forget the wax and feathers, and do a better job on the wings.

Anyone who has ever been privileged to direct a film also knows that, although it can be like trying to write 'War and Peace' in a bumper car in an amusement park, when you finally get it right, there are not many joys in life that can equal the feeling.

Don't get obsessed with not liking a movie.

The truth of a thing is in the feel of it, not in the think of it.