And I have this little litany of things they can do. And the first one, of course, is to write - every day, no excuses. It's so easy to make excuses. Even professional writers have days when they'd rather clean the toilet than do the writing.

Once you grow past Mommy and Daddy coming running when you're hurt, you're really on your own. You're alone, and there's no one to help you.

No, I think the future of humanity will be like the past, we'll do what we've always done and there will still be human beings. Granted, there will always be people doing something different and there are a lot of possibilities.

People have the right to call themselves whatever they like. That doesn't bother me. It's other people doing the calling that bothers me.

We often discover what will do, by finding out what will not do; and probably he who never made a mistake never made a discovery.

If we suppose that many natural phenomena are in effect computations, the study of computer science can tell us about the kinds of natural phenomena that can occur.

Theoretical physics is one of the few fields in which being disabled is no handicap - it is all in the mind.

I'm somebody who has to physically experience an environment in order to know it as well as I would like to know it. I recognize this is impressionistic, not scientific. People say, 'You sound like Walt Whitman.' Well, I'll take that comparison.