If we only obey those rules that we think are just and reasonable, then no rule will stand, for there is no rule that some will not think is unjust and unreasonable.

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 can’t help you, I can only guide you, and you are the one who can help yourself.

I use a lot of sense memory and, well, I can't really avoid getting into character.

That's the really neat thing about Dan Quayle, as you must have realized from the first moment you looked into those lovely blue eyes: impeachment insurance.

We cannot give our children what we don’t have.

My experience from 20 years of Africa is that the seemingly impossible is possible.

It's the fans that need spring training. You gotta get them interested. Wake them up and let them know that their season is coming, the good times are gonna roll.

I think maybe the key to having a long relationship is really appreciating that person's life and not trying to own it. It's like just stop trying. We all do it.

Miracles begin when we consider the possibility that there might be another way.

I remember when I was very young, I read an article by Fats Domino which has really influenced me. He said, 'You should never sing the lyrics out very clearly.

Courage to strengthen, fire to blind, music to daze, iron to bind.