History does not always repeat itself. Sometimes it just yells, 'Can't you remember anything I told you?' and lets fly with a club..

Editors never buy manuscripts that are left on the closet shelf at home..

Generally, a desirable, practically attainable idea, suggested in prophecy, has a chance of forcing itself into reality by its very existence..

That's the trouble with languages. They have to be learned..

Immunity corrupts; absolute immunity corrupts absolutely..

No literature is sound, no philosophy of action workable, if it doesn't take a hard look at itself..

Never accept the initial premise of the opposition..

There's nothing quite so stultifying as having someone around who has all the answers-and gives them to you..

Too darned good a machine can be a menace, not a help..

Write me a creature that thinks as well as a man or better than a man, but not like a man..

Science is not a sacred cow-but there are a large number of would-be sacred cowherds busily devoting quantities of time, energy and effort to the tas….

Man studied birds for centuries, trying to learn how to make a machine to fly like them. He never did do the trick; his final success came when he br….

We presuppose two things: that there is yet to be learned infinitely more than is now known, and that man can learn it..

It was the law that if a white man was caught trying to educate a Negro slave, he was liable to prosecution entailing a fine of fifty dollars and a j….

Pioneering basically amounts to finding new and more horrible ways to die.