You don't think progress goes in a straight line, do you? Do you recognize that it is an ascending, accelerating, maybe even exponential curve? It takes hell's own time to get started, but when it goes it goes like a bomb.

You can't really predict the future. All you can do is invent it.

I'm doing a book, 'Chasing Science,' about the pleasures of science as a spectator sport.

On this day I want to tell you about, which will be about a thousand years from now, there were a boy, a girl and a love story.

My old English buddy, John Rackham, wrote and told me what made science fiction different from all other kinds of literature - science fiction is written according to the science fiction method.

When I sit down to the feast of life ... I'm so busy planning on how to pick up the check, and wondering what the other people think of me for paying it, and wondering if I have enough money in my pocket to pay the bill, that I don't get around to eating.

I'm pretty catholic about what constitutes science fiction.