The first quarter-century of your life was doubtless lived under the cloud of being too young for things, while the last quarter-century would normally be shadowed by the still darker cloud of being too old for them; and between those two clouds, what small and narrow sunlight illumines a human lifetime!

We believe that to govern perfectly it is necessary to avoid governing too much.

Laziness in doing stupid things can be a great virtue.

If I had a child who wanted to be a teacher, I would bid him Godspeed as if he were going to war. For indeed the war against prejudice, greed, and ignorance is eternal, and those who dedicate themselves to it give their lives no less because they may live to see some fraction of the battle won.

And I believe that the Binomial Theorem and a Bach Fugue are, in the long run, more important than all the battles of history.

There are times in life when the most comfortable thing is to do nothing at all. Things happen to you and you just let them happen.

This storm you talk of . . .t will be such a one, my son, as the world has not seen before. There will be no safety by arms, no help from authority, no answer in science. It will rage till every flower of culture is trampled, and all human things are leveled in a vast chaos.