Human history becomes more and more a race between education and catastrophe.

People demand freedom of speech as a compensation for the freedom of thought which they seldom use.

There is no come back to caves. We are too many.

Our true nationality is mankind.

Though I love my country, I do not love my countrymen.

A man is not rightly conditioned until he is a happy, healthy, and prosperous being; and happiness, health, and prosperity are the result of a harmonious adjustment of the inner with the outer of the man with his surroundings.

The great gift of human beings is that we have the power of empathy, we can all sense a mysterious connection to each other.

We have to heal our wounded world. The chaos, despair, and senseless destruction we see today are a result of the alienation that people feel from each other and their environment.

There seems to be some perverse human characteristic that likes to make easy things difficult.

If you talk to a man in a language he understands, that goes to his head. If you talk to him in his language, that goes to his heart.

Human history is in essence a history of ideas.

A great man is different from an eminent one in that he is ready to be the servant of the society.

The capacity to suffer varies more than anything that I have observed in human nature.

When people are protecting something truly special to them, they truly can become...as strong as they can be.

All sins are attempts to fill voids.

Every form of addiction is bad, no matter whether the narcotic be alcohol, morphine or idealism.

Everything that irritates us about others can lead us to an understanding of ourselves.

It is no measure of health to be well adjusted to a profoundly sick society.

Take away paradox from the thinker and you have a professor.

I despise people who depend on these things [heroin and cocaine]. If you really want a mind-altering experience, look at a tree.

Challenging the meaning of life is the truest expression of the state of being human.