Science doesn't purvey absolute truth. Science is a mechanism... for testing your thoughts against the universe.

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.

A litany of headlights blinding her, she stands unsteady on the dotted traffic line, takes timid steps toward rolled up windows behind which any horror could crouch....

There is a criterion by which you can judge whether the thoughts you are thinking and the things you are doing are right for you. The criterion is: Have they brought you inner peace?

I was going to buy my girl a Packard car for Christmas, but it took too long to deliver, so I bought her some handkerchiefs.

We are all historians in our small way.

In prayer we can approach God with complete assurance of His ability to answer us. There is no limit to what we can ask, if it is according to His will.

I am fascinated with criminal law because it is as rigorous as a poem and because it is based on what has been written down even before one has committed a crime.

Out: Reading is fundamental. In: Feeling is fundamental.

[To a woman whose cellphone rang during a formal meeting:] You'd better answer that. It could be someone important.

I am bewildered by the magnificence of your beauty; and wish to see you with a hundred eyes . . . I am in the house of mercy, and my heart is a place of prayer.

Liking someone doesn't make you weak.