[Y]our agricultural revolution is not an event like the Trojan War, isolated in the distant past and without relevance to your lives today. The work begun by those neolithic farmers in the Near East has been carried forward from one generation to the next without a single break, right into the present moment. It's the foundation of your vast civilization today in exactly the same way that it was the foundation of the very first farming village.

Do you see the slightest evidence anywhere in the universe that creation came to an end with the birth of man? Do you see the slightest evidence anywhere out there that man was the climax toward which creation had been straining from the beginning? ...Very far from it. The universe went on as before, the planet went on as before. Man's appearance caused no more stir than the appearance of jellyfish.

I hope it will not be too long before the technologies that support our population explosion begin to be perceived as no less hazardous to the future of life on this planet than the endless production of radioactive wastes.

If we continue...to consume the world until there's no more to consume, then there's going to come a day, sure as hell, when our children or their children or their children's children are going to look back on us - on you and me - and say to themselves, "My God, what kind of monsters were these people?"

Don't wait. Where do you expect to get by waiting? Doing is what teaches you. Doing is what leads to inspiration. Doing is what generates ideas. Nothing else, and nothing less.

five severed fingers do not make a hand

When you send off a short story, it sits on the editor's desk in the same pile with stories by the most famous and honored names in present-day writing-and it's not going to be accepted unless it's as good as theirs. (And it'll probably have to be better.)