The world of A.D. 2014 will have few routine jobs that cannot be done better by some machine than by any human being. Mankind will therefore have become largely a race of machine tenders.

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.

Every author really wants to have letters printed in the paper. Unable to make the grade, he drops down a rung of the ladder and writes novels.

If the beloved is everywhere, the lover is a veil, but when living itself becomesthe Friend, lovers disappear.

Tread softly because you tread on my dreams.

If you are going to try, go all the way or don't even start. If you follow it you will be alive with the gods. It is the only good fight there is.

Love to Christ is proved by doing the things which He commands, and not merely saying, Lord, Lord.

In thousands of years there has been no advance in public morals, in philosophy, in religion or in politics, but the advance in business has been the greatest miracle the world has ever known.

Keep dating and you will become so sick, so badly crippled, so deformed, so emotionally warped and mentally defective that you will marry anybody.

Just as a pebble thrown into the water creates ripples, so our thoughts create similar effects on our palms.

Defeat ends when we launch into another battle. Failure has no end: it is a lifetime choice.

Reason is not the sole basis of moral virtue in man. His social impulses are more deeply rooted than his rational life.