A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.

People who think they know everything are a great annoyance to those of us who do.

The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

When stupidity is considered patriotism, it is unsafe to be intelligent.

So the universe is not quite as you thought it was. You'd better rearrange your beliefs, then. Because you certainly can't rearrange the universe.

In life, unlike chess, the game continues after checkmate.

People think of education as something that they can finish.

There are no nations! There is only humanity. And if we don't come to understand that right soon, there will be no nations, because there will be no humanity.

A robot may not injure a human being, or, through inaction, allow a human being to come to harm.

Violence is the last refuge of the incompetent.

A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.

I wanted to know the denouement of your life story. I have no interest in the narrative.

Egalitarianism trumps elitism. Only a selfish fool will tell you otherwise

To enjoy a beautiful life, always believe in your heart that life is wonderful.

A man defines his standing at the court of chastity by his views of women.

Formerly, a public man needed a private secretary for a barrier between himself and the public. Nowadays he has a press secretary, to keep him properly in the public eye.

Boredom, anger, sadness, or fear are not 'yours,' not personal. They are conditions of the human mind. They come and go. Nothing that comes and goes is you.

A change of feeling is a change of destiny.

Emotion is messy, contradictory... and true.

We are committed to free access and free practice, to the members of the other two religions, to the holy shrines in Jerusalem. To the Muslims, to the Christians.

I think everyone is their harshest critic, but I strive for excellence as much as I can because I think it shows.