You have to know the past to understand the present..

For small creatures such as we the vastness is bearable only through love..

We are at a crossroads in human history. Never before has there been a moment so simultaneously perilous and promising. We are the first species to h….

The reappearance of the crescent moon after the new moon; the return of the Sun after a total eclipse, the rising of the Sun in the morning after its….

We live in a society exquisitely dependent on science and technology and yet have cleverly arranged things so that almost no one understands science ….

The suppression of uncomfortable ideas may be common in religion or in politics, but it is not the path to knowledge, and there's no place for it in ….

When a honeybee dies it releases a death pheromone, a characteristic odour that signals the survivors to remove it from the hive. The corpse is promp….

The Cosmos is all that is or was or ever will be. Our feeblest contemplations of the Cosmos stir us -- there is a tingling in the spine, a catch in t….

Human beings grew up in forests; we have a natural affinity for them. How lovely a tree is, straining toward the sky..

(When asked merely if they accept evolution, 45 percent of Americans say yes. The figure is 70 percent in China.) When the movie Jurassic Park was sh….

When you realize that no one really knows what they are doing and that everyone is doing the best they can according to their own level of consciousn….

I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students..

Modern science has been a voyage into the unknown, with a lesson in humility waiting at every stop. Many passengers would rather have stayed home..

For a long time the human instinct to understand was thwarted by facile religious explanations..

Life is but a momentary glimpse of the wonder of this astonishing universe, and it is sad to see so many dreaming it away on spiritual fantasy..

Observation: I can't see a thing. Conclusion: Dinosaurs..

Too much openness and you accept every notion, idea, and hypothesis-which is tantamount to knowing nothing. Too much skepticism-especially rejection ….

We can make a similar examination, but with greater uncertainty, of the extraterrestrial hypothesis that holds that a wide range of UFOs viewed on th….

Much of human history can, I think, be described as a gradual and sometimes painful liberation from provincialism, the emerging awareness that there ….

The politicians and the religious leaders and the weapons scientists have been at it for a long time and they've made a thorough mess of it. I mean, ….

Imagination will often carry us to worlds that never were. But without it we go nowhere..