I have never written a book that didn't teach me far more than it taught my reader.

A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.

Fertility is hereditary. If your parents didn't have any children, neither will you. I do not fear computers. I fear the lack of them.

When, however, the lay public rallies round an idea that is denounced by distinguished but elderly scientists and supports that idea with great fervor and emotion - the distinguished but elderly scientists are then, after all, probably right.

True literacy is becoming an arcane art, and the nation is steadily "dumbing down."

No one can possibly have lived through the Great Depression without being scarred by it. No amount of experience since the depression can convince someone who has lived through it that the world is safe economically.

And in man is a three-pound brain which, as far as we know, is the most complex and orderly arrangement of matter in the universe.