Isaac Asimov

"Outside intelligences, exploring the Solar System with true impartiality, would be quite likely to enter the Sun in their records thus: Star X, spectral class G0, 4 planets plus debris."

"Predicting the future is a hopeless, thankless task, with ridicule to begin with and, all too often, scorn to end with."

"Ten years on the moon could tell us more about the universe than a thousand years on the earth might be able to."

"The fact that the general incidence of leukemia has doubled in the last two decades may be due, partly, to the increasing use of x-rays for numerous purposes. The incidence of leukemia in doctors, who are likely to be so exposed, is twice that of the general public. In radiologists … the incidence is ten times greater."

"[B]y 1204, the only place where the entire body of Greek learning existed, still intact, was Constantinople. As a result of the crusaders' conquest, however, Constantinople was ruthlessly pillaged and destroyed and almost all the great treasures of ancient Greek learning were lost forever. It is because of that sack, for instance, that we have only seven plays left out of the better than one hundred written by Sophocles. The tragedy of 1204 can never be undone and for all of time, only bits and pieces of the marvelous Greek world can be known to us."

"History is a story without an end."

"Private profit is often hidden under a careful coating of great patriotism."

"I don't believe in flying saucers... The energy requirements of interstellar travel are so great that it is inconceivable to me that any creatures piloting their ships across the vast depths of space would do so only in order to play games with us over a period of decades."

"Start with a planet like the earth, with a complement of simple compounds bound to exist upon it, add the energy of a nearby sun, and you are bound to end with nucleic acids. You can't avoid it."

"It is important to remember that the viciousness and wrongs of life stick out very plainly but that even at the worst times there is a great deal of goodness, kindness, and day-to-day decency that goes unnoticed and makes no headlines."

"Indeed, it may well be argued that one reason for the decline in science, art, and literature was the increasing absorption of the better minds into a new sort of intellectual pursuit – theology."

"[W]hen one plays for top prizes one must be prepared to pay top stakes."

"It seems to be almost an invariable rule that as real power declines, the symbols of power multiply and intensify in compensation."

"There is a kind of selective memory that afflicts men when they view the past. They see the good and overlook the evil."

"476 ... is usually taken as the date of the "fall of the Roman Empire." The date, however, is a false one. No one at this period of time considered that the Roman Empire had "fallen." Indeed, it still existed and was the most powerful realm in Europe. Its capital was at Constantinople and the Emperor was Zeno. It is only because we ourselves are culturally descended from the Roman west, that we tend to ignore the continued existence of the Roman Empire in the east."

"Often, writers on historical events tend to consider ... a loss of willingness to fight as a sign of "decadence," as though there were something despicable about not being a bully and not being willing to engage in mass murder. Perhaps we ought to feel instead that to cease to be warlike means to begin to be civilized and decent."

"Generals are usually a conservative force who can be relied on to oppose social change."

"In the world of today can there be peace anywhere until there is peace everywhere?"

"The article was essentially about the coming disappearance of women. I pointed out that the only differences between men and women are the women are smaller and weaker than men, and women have to bear the children, and that all other differences are really social. They are born of the environment. They're not real. [...] You say, "Women are so pure and sweet and nice, if only they have the vote, they would clean up politics." So you give them the vote, and politics is just as dirty as ever. [...] If we get into the 21st century when all the work that's required to be done (and there won't be much of it) doesn't require muscles anyway (it's all a matter of closing contacts, pushing papers, whatever the heck you do), women can do it as well as men. And when it comes to children, there's going to have to be a low birth rate (we'll have to or everything goes 'blooey!'). And in addition, children will be considered, I think, the responsibility of society and not the responsibility of their mothers. Children will be far too valuable to trust to their mothers (most of them are complete incompetents as mothers)."

"Religion is more conservative than any other aspect of human life."

"[N]o matter how outrageous a lie may be, it will be accepted if stated loudly enough and often enough."

"It is by the Imperial Capital that contemporaries (and posterity, too) judge an Empire, and its magnificence impresses them mightily and leads them to judge the Emperor a great man and hero, even though it may all be based on robbery, and though the provinces of the Empire may be sunk in misery."

"We can hope that the ways of peace will attract the Arabic nations, for their territory and opportunities are broad enough for immeasurable advance, if the energies vented in spleen, are turned instead to a modernisation of the technology, a restoration of the soil, and a renovation of the economic, social, and political structure of those great and venerable lands."

"It is an odd fact that anyone who wishes to start a war must always make it appear that he is fighting in a just cause even if the real motive is naked aggression. Fortunately for the would-be aggressor, a "just cause" is very easy to find."

"Probably, the most-often-repeated lesson in history is that foreigners who are called in to help one side in a civil war take over for themselves. It is a lesson that seems never to be learned despite endless repetition."

"There has never been any custom, however useless it may become with changing conditions, that isn't clung to desperately simply because it is something old and familiar."

"It is all too easy to forget that there are emotional motivations in history, as well as economic ones."

"It seemed to him https://en.wikipedia.org/wiki/Euphemius_(Sicily) Euphemius it would be a brilliant notion to call in an outside force to fight on his behalf. This same brilliant notion has occurred to participants in civil wars uncounted times in history and it has ended in catastrophe just about every time, since those called in invariably take over for themselves. Of all history's lessons, this seems to be the plainest, and the most frequently ignored."

"Had Hannibal had a government behind him that knew how to exploit victories – had he been born a Roman, for instance – he might have conquered the world."

"Throughout history there have been peasant rebellions which have followed always the same course. Blindly, the peasants sacked and destroyed, and when members of the "upper classes" fell into their hands, they killed ruthlessly and cruelly, for never in their lives had they been taught gentleness and mercy by those now in their power."

"I consider one of the most important duties of any scientist the teaching of science to students and to the general public."

"I recognize the necessity of animal experiments with my mind but not with my heart."

"Inspect every piece of pseudoscience and you will find a security blanket, a thumb to suck, a skirt to hold. What does the scientist have to offer in exchange? Uncertainty! Insecurity!"

"For man to become successful, for man to establish himself as the ruler of the planet, it was necessary for him to use his brain as something more than a device to make the daily routine of getting food and evading enemies a little more efficient. Man had to learn to control his environment.""

"Can the word ‘best’ mean anything at all, except to some particular person in some particular mood? Perhaps not — so if we allow the word to stand as an absolute, you, or you, or perhaps you, may be appalled at omissions or inclusions or, never having read me before, may even be impelled to cry out, ‘Good heavens, are those his best?’"

"Hypocrisy is a universal phenomenon. It ends with death, but not before."

"Science is a systematic method for studying and working out those generalizations that seem to describe the behavior of the universe. It could exist as a purely intellectual game that would never affect the practical life of human beings either for good or evil, and that was very nearly the case in ancient Greece, for instance. Technology is the application of scientific findings to the tools of everyday life, and that application can be wise or unwise, useful or harmful. Very often, those who govern technological decisions are not scientists and know little about science."

"What I will be remembered for are the Foundation Trilogy and the Three Laws of Robotics. What I want to be remembered for is no one book, or no dozen books. Any single thing I have written can be paralleled or even surpassed by something someone else has done. However, my total corpus for quantity, quality and variety can be duplicated by no one else. That is what I want to be remembered for."

"The true discovery of America by mankind came when those first hunting bands crossed over from Siberia 25,000 years ago. This, however, never seems to count. When people speak of the "discovery of America" they invariably mean its discovery by Europeans."

"There is no belief, however foolish, that will not gather its faithful adherents who will defend it to the death."

"If, as I maintain and firmly believe, there is no objective definition of intelligence, and what we call intelligence is only a creation of cultural fashion and subjective prejudice, what the devil is it we test when we make use of an intelligence test?"

"My parents, both of whom spoke Russian fluently, made no effort to teach me Russian, but insisted on my learning English as rapidly and as well as possible. They even set about learning English themselves, with reasonable, but limited, success. In a way, I am sorry. It would have been good to know the language of Pushkin, Tolstoy, and Dostoevski. On the other hand, I would not have been willing to let anything get in the way of the complete mastery of English. Allow me my prejudice: surely there is no language more majestic than that of Shakespeare, Milton, and the King James Bible, and if I am to have one language that I know as only a native can know it, I consider myself unbelievably fortunate that it is English."

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

"Self-education is, I firmly believe, the only kind of education there is."

"Straightforward preaching spoils the effectiveness of a story. If you can't resist the impulse to improve your fellow human beings, do it subtly."

"There is no way of being almost funny or mildly funny or fairly funny or tolerably funny. You are either funny or not funny and there is nothing in between. And usually it is the writer who thinks he is funny and the reader who thinks he isn't."

"[S]cientific writing is abhorrently stylized and places a premium on poor quality."

"If you're going to write a story, avoid contemporary references. They date a story and they have no staying power."

"Generals are, as a matter of course, allowed to be far more idiotic than ordinary human beings are permitted to be."

"People are entirely too disbelieving of coincidence. They are far too ready to dismiss it and to build arcane structures of extremely rickety substance in order to avoid it. I, on the other hand, see coincidence everywhere as an inevitable consequence of the laws of probability, according to which having no unusual coincidence is far more unusual than any coincidence could possibly be."