In the presence of total Darkness, the mind finds it absolutely necessary to create light.

Any planet is 'Earth' to those that live on it.

It is not so much that I have confidence in scientists being right, but that I have so much in nonscientists being wrong.

Scientific apparatus offers a window to knowledge, but as they grow more elaborate, scientists spend ever more time washing the windows.

Many a prophecy, by the mere force of its being believed, is transmuted to fact.

I have never, in all my life, not for one moment, been tempted toward religion of any kind. The fact is that I feel no spiritual void. I have my philosophy of life, which does not include any aspect of the supernatural and which I find totally satisfying. I am, in short, a rationalist and believe only that which reason tells me is so.

The world of A.D. 2014 will have few routine jobs that cannot be done better by some machine than by any human being. Mankind will therefore have become largely a race of machine tenders.