We know that virtue does not matter to history, and that crimes remain unpunished; but that every error had its consequences and venges itself unto the seventh generation.

Hitherto man had to live with the idea of death as an individual; from now onward mankind will have to live with the idea of its death as a species.

Adolescence is a kind of emotional seasickness. Both are funny, but only in retrospect.

The progress of science, like an ancient desert trail, is strewn with the bleached skeletons of discarded theories, doctrines, and axioms which seemed to possess eternal life.

Chemically induced hallucinations, delusions and raptures may be frightening or wonderfully gratifying; in either case they are in the nature of confidence tricks played on one's own nervous system.

The Régime did not want Communists; it wanted robots. It will take at least a generation to change them back into humans again.

Somebody once asked Niels Bohr why he had a horseshoe hanging above the front door of his house. Surely you, a world famous physicist, can't really believe that hanging a horseshoe above your door brings you luck? Of course not, Bohr replied, but I have been reliably informed that it will bring me luck whether I believe in it or not.