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.

Ethics change with technology.

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.

The gods do not protect fools. Fools are protected by more capable fools.

Business is warfare

Trees are right at the heart of all the necessary debates: ecological, social, economic, political, moral, religious.

I just don't think animals should be slaughtered for their fur.

Let us learn to show our friendship for a man when he is alive and not after he is dead.

Each culture might lend its own dialect, but above all that is the language of music itself, and it doesn't care about politics or boundaries.

I don't really believe in anything special, but I respect God. I go to church sometimes, but not often.

When you realize that people treat you according to how they see themselves rather than how you really are, you are less likely to be affected by their behavior.

We fail in even the simplest of all scientific observations-nobody looks up anymore.

Motherhood so often comes in conflict with women's capacity to express and live their own lives.

The speech of God is silence. His Word is solitude.