They will have time enough, in those endless aeons, to attempt all things, and to gather all knowledge... no Gods imagined by our minds have ever possessed the powers they will command... But for all that, they may envy us, basking in the bright afterglow of Creation; for we knew the Universe when it was young.

No communication technology has ever disappeared, but instead becomes increasingly less important as the technological horizon widens.

There is no reason to assume that the universe has the slightest interest in intelligence—or even in life. Both may be random accidental by-products of its operations like the beautiful patterns on a butterfly's wings. The insect would fly just as well without them.

Behind every man now alive stand thirty ghosts, for that is the ratio by which the dead outnumber the living.

When one has to ask, "Am I really in love?" the answer is always "No".

I don't believe in astrology; I'm a Sagittarius and we're skeptical.

To be a science fiction writer you must be interested in the future and you must feel that the future will be different and hopefully better than the present. Although I know that most - that many science fiction writings have been anti-utopias. And the reason for that is that it's much easier and more exciting to write about a really nasty future than a - placid, peaceful one.