The end comes when we no longer talk with ourselves. It is the end of genuine thinking and the beginning of the final loneliness. The remarkable thing is that the cessation of the inner dialogue marks also the end of our concern with the world around us. It is as if we noted the world and think about it only when we have to report it to ourselves.

When we debunk a fanatical faith or prejudice, we do not strike at the root of fanaticism. We merely prevent its leaking out at a certain point, with the likely result that it will leak out at some other point.

It is easier to love humanity as a whole than to love one's neighbor.

Those who feel guilty are afraid; and those who are afraid somehow feel guilty. To the onlooker, too, the fearful seem guilty.

It still holds true that man is most uniquely human when he turns obstacles into opportunities.

The future belongs to the learners-not the knowers.

A low capacity for getting along with those near us often goes hand in hand with a high receptivity to the idea of the brotherhood of men.