The best measure of a man's honesty isn't his income tax return. It's the zero adjust on his bathroom scale.
The limits of the possible can only be defined by going beyond them into the impossible.
Any sufficiently advanced technology is indistinguishable from magic.
I don't pretend we have all the answers. But the questions are certainly worth thinking about.
The only way to discover the limits of the possible is to go beyond them into the impossible.
The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.
How inappropriate to call this planet Earth when it is quite clearly Ocean.
Sometimes I think we're alone in the universe, and sometimes I think we're not. In either case the idea is quite staggering.
It is not easy to see how the more extreme forms of nationalism can long survive when men have seen the Earth in its true perspective as a single small globe against the stars.
There is hopeful symbolism in the fact that flags do not wave in a vacuum.
New ideas pass through three periods: 1) It can't be done. 2) It probably can be done, but it's not worth doing. 3) I knew it was a good idea all along!
Perhaps, as some wit remarked, the best proof that there is Intelligent Life in Outer Space is the fact it hasn't come here. Well, it can't hide forever - one day we will overhear it.
It has yet to be proven that intelligence has any survival value.
This is the first age that's ever paid much attention to the future, which is a little ironic since we may not have one.
I don't believe in astrology; I'm a Sagittarius and we're skeptical.
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