It is the invariable lesson to humanity that distance in time, and in space as well, lends focus. It is not recorded, incidentally, that the lesson has ever been permanently learned.

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.

Being in the present moment, one can step outside the mechanical train of life, and this is where the inner revolution begins.

This is night, Diddykins. That's what we call it when it goes all dark like this.

When you sit right down in the middle of yourself you're gonna wanna have a comfortable chair.

Some people wonder why they can't have faith for healing. They feed their body three hot meals a day, and their spirit one cold snack a week.

But I could always tell in her eyes if she got really pissed at me, and her eyes were still pretty smiley

I have confidence that the government of Luxembourg will not make any decision that frustrates this transaction.

Genius knows where the questions are hidden.

A good banana daiquiri is hard to come by. I've only ever found one place in this country that makes a proper one, and that's in Leeds.

It is of far more important that a man shall play something himself, even if he plays it badly, than that he shall go with hundreds of companions to see someone else play well.

Choice by the people themselves is not generally distinguished for its wisdom.