Are we happy that our grandchildren may never seen an elephant except in a picture book?

Outstanding people have one thing in common: an absolute sense of mission

Great minds discuss ideas. Average minds discuss events. Small minds discuss people.

A question that sometimes drives me hazy: Am I, or the others, crazy?

Private passions tire and exhaust themselves, public ones never.

A wise man can play the part of a clown, but a clown can't play the part of a wise man.

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

A human being is a deciding being.

Human nature is not totally fixed, but on any realistic scale, evolutionary processes are much too slow to affect it.

Stupid men are often capable of things the clever would not dare to contemplate...

We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.

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.

Treat people as if they were what they ought to be, and you help them to become what they are capable of being.

The greatest attitude of all is gratitude.

The whole universe is contained within a single human being – you.

I like university professors, but you know, we shouldn't hold them up as the high-water mark of all human achievement. They're just a form of life, another form of life.

A woman's chastity consists, like an onion, of a series of coats.

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

I can calculate the motion of heavenly bodies but not the madness of people.

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

All sins are attempts to fill voids.