And every friend I've got has been writing Mars stories. It was pretty clear I'd never catch up.

Ethics change with technology.

SF isn't a genre; SF is the matrix in which genres are embedded, and because the SF field is never going in any one direction at any one time, there is hardly a way to cut it off.

The human species really could have faced global thermonuclear war. During seventy years of Cold War we grew used to it.

Everything starts as somebody's daydream.

In the world of words the imagination is one of the forces of nature.

In hindsight it may even seem inevitable that a socialist society will starve when it runs out of capitalists.

You learn by writing short stories. Keep writing short stories. The money's in novels, but writing short stories keeps your writing lean and pointed.

We learn only to ask more questions.

It's very difficult for a black man to get out of South-Central Los Angeles, and get out civilized....The only men I know who have escaped, all began reading Robert Heinlein at age ten.

One mark of a good officer, he remembered, was the ability to make quick decisions. If they happen to be right, so much the better.

I think it is silly to be amateur about anything when one has an opportunity of learning.

It's physics. Pure physics, I'm falling fast and faster still.So fall with me. Fall down with me.And stay.

If the Church is a living body united to the same head, governed by the same laws, and pervaded by the same Spirit, it is impossible that one part should be independent of all the rest.

As an Oklahoma quarterback, you learn to perform under pressure.

I've always wanted to do a period piece.

Time is on your side when you own shares of superior companies.

Stanley Cup winners don’t hand back the Stanley Cup.

Peace is an extension of war by political means. Plenty of elbow-room is pleasanter -- and much safer.

I was a very violent kid. I think movies and writing and art have been a way of channeling this. But I have will to defend people - it can be all sorts of people.

Yea, he's alright...but he's no Zach Braff.