To learn is to broaden, to experience more, to snatch new aspects of life for yourself. To refuse to learn or to be relieved at not having to learn is to commit a form of suicide; in the long run, a more meaningful type of suicide than the mere ending of physical life.

Knowledge is not only power; it is happiness, and being taught is the intellectual analog of being loved.

There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.

Life is a journey, but don't worry, you'll find a parking spot at the end.

Do not forget that a traitor within our ranks, known to us, can do more harm to the enemy than a loyal man can do good to us.

All roads lead to Trantor, says the old proverb, and that is where all stars end.

At odd and unpredictable times, we cling in fright to the past .

She's qualified all right. She understands robots like a sister--comes from hating human beings so much, I think.

All sorts of computer errors are now turning up. You'd be surprised to know the number of doctors who claim they are treating pregnant men.

It seems to me, Golan, that the advance of civilization is nothing but an exercise in the limiting of privacy.

A myth or legend is simply not made up out of a vacuum. Nothing is -- or can be. Somehow there is a kernel of truth behind it, however distorted that might be.

A robot may not injure a human being, or, through inaction, allow a human being to come to harm.

Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'

Arthur Clarke says that I am first in science and second in science fiction in accordance with an agreement we have made. I say he is first in science fiction and second in science.

I don't think I've ever held a racket in my hand ... There's got to be somebody in the US who isn't trying to play tennis and stinking up the court.

It is remarkable, Hardin, how the religion of science has grabbed hold.

Goodbye, Hari, my love. Remember always -- all you did for me.
           
-I did nothing for you.
           
-You loved me and your love made me -- human.

No one suggests that writing about science will turn the entire world into a model of judgment and creative thought. It will be enough if they spread the knowledge as widely as possible.

Intuition is the art, peculiar to the human mind, of working out the correct answer from data that is, in itself, incomplete or even, perhaps, misleading.

The Scientist -- with capital letters and no smile.

Science fiction writers foresee the inevitable, and although problems and catastrophes may be inevitable, solutions are not.