Any path to knowledge is a path to God-or Reality, whichever word one prefers to use

Human judges can show mercy. But against the laws of nature, there is no appeal.

When you finally understand the universe, it will not only be stranger than you imagine, it will be stranger than you can imagine.

We seldom stop to think that we are still creatures of the sea, able to leave it only because, from birth to death, we wear the water-filled space suits of our skins.

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.

I'm sure the universe is full of intelligent life. It's just been too intelligent to come here.

Our own grandchildren may demonstrate that-sometimes- Gigantic is Beautiful.