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 su….

The only real problem in life is what to do next..

Isn't killing people in the name of God a pretty good definition of insanity?.

Religion is the most malevolent of all mind viruses..

It may be that our role on this planet is not to worship God - but to create him..

If we have learned one thing from the history of invention and discovery, it is that, in the long run-and often in the short one-the most daring prop….

When the Sun shrinks to a dull red dwarf, it will not be dying. It will just be starting to live and everything that has gone before will merely be a….

It is vital to remember that information - in the sense of raw data - is not knowledge, that knowledge is not wisdom, and that wisdom is not foresigh….

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 pos….

Trying to predict the future is a discouraging and hazardous occupation. If by some miracle a prophet could describe the future exactly as it was goi….

Whether we are based on carbon or on silicon makes no fundamental difference we should each be treated with appropriate respect..

. . . the newspapers of Utopia, he had long ago decided, would be terribly dull..

The fact that we have not yet found the slightest evidence for life - much less intelligence - beyond this Earth does not surprise or disappoint me i….

They had not yet attained the stupefying boredom of omnipotence; their experiments did not always succeed..

We always thought the living Earth was a thing of beauty. It isn’t. Life has had to learn to defend itself against the planet’s random geological sav….

I am unable to distinguish clearly between your religious ceremonies and apparently identical behavior at the sporting and cultural functions you hav….

It is a good principle in science not to believe any 'fact'---however well attested---until it fits into some accepted frame of reference. Occasional….

I sometimes wonder how we spent leisure time before satellite television and Internet came along…and then I realise that I have spent more than half ….

I doubt if there is a single field of study so theoretical, so remote from what is laughingly called everyday life, that it may not one day produce s….

When I start on a book, I have been thinking about it and making occasional notes for some time... So I have lots of theme, locale, subjects and tech….

After their encounter on the approach to Jupiter, there would aways be a secret bond between them---not of love, but of tenderness, which is often mo….