Quotes from Isaac Asimov

Rules, established with reason and justice, can easily outlive their usefulness as circumstances change, yet can remain in force through inertia. It is then not only right, but useful, to break those rules as a way of advertising the fact that they have become useless—or even actually harmful.

The Solarians have given up something mankind has had for a million years; something worth more than atomic power, cities, agriculture, tools, fire, everything; because it's something that made everything possible (...) The tribe, sir. Cooperation between individuals.

A knotty puzzle may hold a scientist up for a century, when it may be that a colleague has the solution already and is not even aware of the puzzle that it might solve.

What lasts in the reader's mind is not the phrase but the effect the phrase created: laughter, tears, pain, joy. If the phrase is not affecting the reader, what's it doing there? Make it do its job or cut it without mercy or remorse.

Despite all that education and experience can do, I retain a certain level of unsophistication that I cannot eradicate and that my friends find amusing. In fact, I think I sometimes detect conspiratorial plottings among my friends to protect me against my own lack of sophistication. I don't mind. I suspect that I am never quite as unsophisticated as they think I am, but I don't mind.

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.

Every vice of the Empire has been repeated in the Foundation. Inertia! Our ruling class knows one law; no change. Despotism! They know one rule; force. Maldistribution! They know one desire; to hold what is theirs.

Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition.

An unpleasant nest of nasty, materialistic and aggressive people, careless of the rights of others, imperfectly democratic at home though quick to see the minor slaveries of others, and greedy without end.

On Earth, we are unmanned by our longing for a pastoral past that never really existed; and that, if it had existed, could never exist again...on the Moon, there is no past to long for or dream about. There is no direction but forward.

It's just that old people always think young people haven't really learned about love; and young people think that old people have forgotten about love; and, you know, they're both wrong.

You are a practical man, Elijah. You do not moon romantically over Earth's past, despite your healthy interest in it. Nor do you stubbornly embrace the City culture of Earth's present day. We felt that people such as yourself were the ones that could lead Earthmen to the stars once more.

It is always useful, you see, to subject the past life of reform politicians to rather inquisitive research.

people live and die by nonsense. It's not what is so much as what people think is.

The word 'tradition' covered it all, as it covered so many things, some useful, some foolish.

I tell you it's deadly when you start thinking your wife might be right.

After all, the essential point in running a risk is that the returns justify it.

The robot said, 'I have been trying, friend Julius, to understand some remarks Elijah made to me earlier. Perhaps I am beginning to, for it suddenly seems to me that the destruction of what should not be, that is, the destruction of what you people call evil, is less just and desirable than the conversion of thi sevil into what you call good.' He hesitated, then, almost as though he were surprised at his own owrds, he said, 'Go, and sin no more!

With the destruction of our social fabric, science will be broken into a million pieces. Individuals will know much of exceedingly tiny facets of what there is to know.

Were I to use the wits the good Spirits gave me," he said, "then I would say this lady can not exist - for what sane man would hold a dream to be reality. Yet rather would I not be sane and lend belief to charmed, enchanted eyes.

To him, a stilted geometric love of arrangement was "system," and indefatigable and feverish interest in the pettiest facets of day-to-day bureaucracy was "industry", indecision when right was "caution", and blind stubbornness when wrong, "determination.

you can't just move backward. You can't push the chicken back into the egg, wine back into the grape, the boy back into the womb. If you want the baby to let go of your watch, you don't just try to explain that he ought to do it—you offer him something he would rather have.

The whole world might know you and acclaim you, but someone in the past, forever unreachable, forever unknowing, spoils it all.

We mythologists know very well that myths and legends contain borrowings, moral lessons, nature cycles, and a hundred other distorting influences, and we labor to cut them away and get to what might be a kernel of truth. In fact, these same techniques must be applied to the most sober histories, for no one writes the clear and apparent truth—if such a thing can even be said to exist.