Anything beats an expensive stack of paper.

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.

To be happy, make others happy.

That's all we have, finally, the words, and they had better be the right ones.

Grateful souls focus on the happiness and abundance present in their lives and this in turn attracts more abundance and joy towards them.

Make your heart the most beautiful home.

It's easier to revise lousy writing than to revise a blank sheet of paper.

There is not a sprig of grass that shoots uninteresting to me.

Great art picks up where nature ends.

Every chemical reaction has a transition state.

I'm never running for office. I love being able to speak to members of Congress or members of the Senate and floating on either side, because it takes all of us. It's going to take both of them.

I think when you've played at the level that I've played, anything outside the top 10 in certain aspects is just a number, unless you're obviously trying to get into tournaments and stuff.