Naturally, since [the Sumerians] didn't know what caused the flood anymore than we do, they blamed the gods. (That's the advantage of religion. You're never short an explanation for anything.)

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.

Feelings came alive in Vicki for which the earth and sea had never taught her names.

Those see nothing but faults that seek for nothing else.

When you work with people who misunderstand you, instead of getting transmissions, you get transmutations, and that's much more interesting in the long run.

I'm a real pawn-shopper.

Unwrapping occurs when the "solution" is explicitly built into the program from the start.

These guys like each other almost as much as they like themselves.

But it’s compounded by the fact that I love animals and feel better not eating them.

Suffering is the way for Realization of God.

It is Love that gives joy to happiness.

The lightning spark of thought generated in the solitary mind awakens its likeness in another mind.