A world is supported by four things: the learning of wise, the justice of great, the prayers of the righteous and the valor of the brave. But all of these are as nothing without a ruler who knows the art of ruling.

Religion, too, is a weapon. What manner of weapon is religion when it becomes the government?

Mankind has only one science… its the science of discontent.

A man is a fool not to put everything he has, at any given moment, into what he is creating.

Most men go through life unchallenged, except at the final moment.

The person who takes the banal and ordinary and illuminates it in a new way can terrify. We do not want our ideas changed.

When you think you know something: that is a most perfect barrier against learning.