Así, el mitraísmo celebrado el 25 de diciembre como día del nacimiento del Sol, que era una fiesta popular y alegre. Los cristianos la adoptaron como… - Isaac Asimov

That's another trouble with education as we now have it. People think of education as something that they can finish.

"Do you expect him to say to you, 'So-and-so is a robot because he hardly ever eats with people, and I have never seen him fall asleep in the middle of a case; and once when I peeped into his window in the middle of the night, there he was, sitting up with a book; and I looked in his frigidaire and there was no food in it.' "If he told you that, you would send for a strait-jacket. But if he tells you, 'He never sleeps; he never eats,' then the shock of the statement blinds you to the fact that such statements are impossible to prove. You play into his hands by contributing to the to-do."

I wouldn't want [the people of Baleyworld] to live that long as a general thing. The pace of historical and intellectual advance would then become too slow. Those at the top would stay in power too long. Baleyworld would sink into conversation and decay - as your world has done.