Not only can you not step into the same river twice; it is not even the same you who can’t step into the same river twice. Everything modifies everyt… - Robert Sheckley

And do not think," Manisfree said, "that we absolve ourselves from blame in this situation. Although we teachers purport to know more than other men, we have usually chosen to remain aloof from public life. Practical, hardheaded men of the world have always frightened us; and those men, in their hardheaded way, have brought us to this." "Nor is aloofness our only failure," said Hanley of Anthropology. "Let me point out that we have taught—badly! Our few promising students became teachers, thus insulating themselves as we had. The rest of our students sat through the sleep-provoking drone of our lectures, eager only to depart and take their places in a mad world. We did not touch them, Joenes, we did not move them, and we did not teach them to think." "In fact," said Blake of Physics, "we did quite the contrary. We managed to equip most of our students with a definite hatred of thinking. They learned to view culture with the greatest suspicion, to ignore ethics, and to consider the sciences solely as a means of making money. This was our responsibility and our failure. The outcome of that failure is the world.

He had poured too much gilt on the lily; in striving to create a paragon, he had only succeeded in producing a paradox.

It was an eccentric sort of event, even for Esmeralda, and needed a special kind of person to volunteer to do it. Luckily, the human race has never thought up anything so ludicrous, dangerous, and frivolous that it won’t attract many willing volunteers.