If civilization has risen from the Stone Age, it can rise again from the Wastepaper Age.

The test and the use of man's education is that he finds pleasure in the exercise of his mind.

The sole justification of teaching, of the school itself, is that the student comes out of it able to do something he could not do before. I say do and not know, because knowledge that doesn't lead to doing something new or doing something better is not knowledge at all.

I have always been - I think any student of history almost inevitably is - a cheerful pessimist.

Boredom and fatigue are great historical forces.

A culture may be conceived as a network of beliefs and purposes in which any string in the net pulls and is pulled by the others,thus perpetually changing the configuration of the whole. If the cultural element called morals takes on a new shape, we must ask what other strings have pulled it out of line. It cannot be one solitary string, nor even the strings nearby, for the network is three-dimensional at least.

Let us face a pluralistic world in which there are no universal churches, no single remedy for all diseases, no one way to teach or write or sing, no magic diet, no world poets, and no chosen races, but only the wretched and wonderfully diversified human race.