I've often thought there ought to be a manual to hand to little kids, telling them what kind of planet they're on, why they don't fall off it, how much time they've probably got here, how to avoid poison ivy, and so on.

Every passing hour brings the Solar System forty three thousand miles closer to Globular Cluster M13 in Hercules — and still there are some misfits who insist that there is no such thing as progress.

Jokes have to be quite naked to be understood. They have to be quite simple.

When a man becomes a writer, I think he takes on a sacred obligation to produce beauty and enlighenment and comfort at top speed

Being an American means never having to say you're sorry.

One might be led to suspect that there were all sorts of things going on in the Universe which he or she did not thoroughly understand.

You can't just eat good food. You've got to talk about it too. And you've got to talk about it to somebody who understands that kind of food.