I believe any malevolent supercivilisation would have rapidly self-destructed as we may be in the process of doing ourselves. If we do have contact, ….

I think in the long run the money that s been put into the space program is one of the best investments this country has ever made . . .This is a dow….

The time was fast approaching when Earth, like all mothers, must say farewell to her children..

I've been saying for a long time that I'm hoping to find intelligent life in Washington..

There is hopeful symbolism in the fact that flags do not wave in a vacuum..

No utopia can ever give satisfaction to everyone, all the time. As their material conditions improve, men raise their sights and become discontented ….

I don't think there are any secrets to writing in the - everybody has their own techniques. You must be widely read, that's one thing, because you ha….

A faith that cannot survive collision with the truth is not worth many regrets..

The more wonderful the means of communication, the more trivial, tawdry, or depressing its contents seemed to be..

The one fact about the future of which we can be certain is that it will be utterly fantastic..

... chemistry is a trade for people without enough imagination to be physicists..

There's a passage about 'rivers of molten rock that wound their way... until they cooled and lay like twisted dragon-shapes vomited from the tormente….

We stand now at the turning point between two eras. Behind us is a past to which we can never return....

We over estimate technology in the short term and under estimate technology in the long term..

The person one loves never really exists, but is a projection focused through the lens of the mind onto whatever screen it fits with least distortion..

I suspect that religion is a necessary evil in the childhood of our particular species. And that's one of the interesting things about contact with o….

He found it both sad and fascinating that only through an artificial universe of video images could she establish contact with the real world..

Using material ferried up by rockets, it would be possible to construct a "space station" in ... orbit. The station could be provided with living qua….

I'm sometimes asked how I would like to be remembered. I've had a diverse career as a writer, underwater explorer, space promoter and science popular….

Nowhere in space will we rest our eyes upon the familiar shapes of trees and plants, or any of the animals that share our world. Whatsoever life we m….

Space is what stops everything from happening in the same place..