It has yet to be proven that intelligence has any survival value.

I don't believe in God but I'm very interested in her.

Any sufficiently advanced technology is indistinguishable from magic.

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.

Politicians should read science fiction, not westerns and detective stories.

I have a fantasy where Ted Turner is elected President but refuses because he doesn't want to give up power.

The best measure of a man's honesty isn't his income tax return. It's the zero adjust on his bathroom scale.

If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong.

I'm sure we would not have had men on the Moon if it had not been for Wells and Verne and the people who write about this and made people think about it. I'm rather proud of the fact that I know several astronauts who became astronauts through reading my books.

Reading computer manuals without the hardware is as frustrating as reading manuals without the software.

The inspirational value of the space program is probably of far greater importance to education than any input of dollars... A whole generation is growing up which has been attracted to the hard disciplines of science and engineering by the romance of space.