I speak to everyone in the same way, whether he is the garbage man or the president of the university.

A tyranny based on ... deception and maintained by terror must inevitably perish from the poison it generates within itself.

This is a question too difficult for a mathematician. It should be asked of a philosopher"(when asked about completing his income tax form)

We must not only learn to tolerate our differences. We must welcome them as the richness and diversity which can lead to true intelligence.

If one tries to navigate unknown waters one runs the risk of shipwreck

When we are working at something, we come down from our high logical horse and sniff around with our nose to the ground. Then we obliterate our traces in order to become more God-like.

The most important human endeavor is the striving for morality in our actions. Our inner balance and even our very existence depend on it. Only morality in our actions can give beauty and dignity to life. To make this a living force and bring it to clear consciousness is perhaps the foremost task of education. The foundation of morality should not be made dependent on myth nor tied to any authority lest doubt about the myth or about the legitimacy of the authority imperil the foundation of sound judgment and action.