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The Demon-Haunted World: Science as a Candle in the Dark by Carl Sagan
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The Demon-Haunted World Quotes Showing 121-150 of 461

"Why does Alexander the Great never tell us about the exact location of his tomb, Fermat about his Last Theorem, John Wilkes Booth about the Lincoln assassination conspiracy, Hermann Göring about the Reichstag fire? Why don't Sophocles, Democritus, and Aristarchus dictate their lost books?"
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Our politics, economics, advertising, and religions (New Age and Old) are awash in credulity. Those who have something to sell, those who wish to influence public opinion, those in power, a skeptic might suggest, have a vested interest in discouraging skepticism,"
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"No physicist started out impatient with common-sense notions, eager to replace them with some mathematical abstraction that could be understood only by rarified theoretical physics. Instead, they began, as we all do, with comfortable, standard, common-sense notions. The trouble is that Nature does not comply. If we no longer insist on our notions of how Nature ought to behave, but instead stand before Nature with an open and receptive mind, we find that common sense often doesn't work. Why not? Because our notions, both hereditary and learned, of how Nature works were forged in the millions of years our ancestors were hunters and gatherers. In this case common sense is a faithless guide because no hunter-gatherer's life ever depended on understanding time-variable electric and magnetic fields. There were no evolutionary penalties for ignorance of Maxwell's equations. In our time it's different."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Dreams are associated with a state called REM sleep, the abbreviation standing for rapid eye movement. The REM state is strongly correlated with sexual arousal. Experiments have been performed in which sleeping subjects are awakened whenever REM state emerges, while members of a control group are awakened just as often each night but not when they're dreaming. After some days, the control group is a little groggy, but the experimental group - the ones who are prevented from dreaming - is hallucinating in daytime. It's not that a few people with a particular abnormality can be made to hallucinate in this way; anyone is capable of hallucinations."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Si queremos que el mundo escape de las temibles consecuencias del crecimiento de la población global y de los diez mil o doce mil millones de personas en el planeta a finales del siglo XXI, debemos inventar medios seguros y más eficientes de cultivar alimentos, con el consiguiente abastecimiento de semillas, riego, fertilizantes, pesticidas, sistemas de transporte y refrigeración. También se necesitarán métodos contraconceptivos ampliamente disponibles y aceptables, pasos significativos hacia la igualdad política de las mujeres y mejoras en las condiciones de vida de los más pobres."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"There was a most revealing rule: Slaves were to remain illiterate. In the antebellum South, whites who taught a slave to read were severely punished. "[To] make a contented slave," Bailey later wrote, "it is necessary to make a thoughtless one. It is necessary to darken his moral and mental vision, and, as far as possible, to annihilate the power of reason." This is why the slaveholders must control what slaves hear and see and think. This is why reading and critical thinking are dangerous, indeed subversive, in an unjust society."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"There is child abuse, and there are such things as repressed memories. But there are also such things as false memories and confabulations, and they are not rare at all. Misrememberings are the rule, not the exception. They occur all the time. They occur even in cases where the subject is absolutely confident - even when the memory is a seemingly unforgettable flashbulb, one of those metaphorical mental photographs."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"It is not the function of our government to keep the citizen from falling into error; it is the function of the citizen to keep the government from falling into error. U.S. SUPREME COURT JUSTICE ROBERT H. JACKSON, 1950"
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"All of us cherish our beliefs. They are, to a degree, self-defining. When someone comes along who challenges our belief system as insufficiently well based - or who, like Socrates, merely asks embarrassing questions that we haven't thought of, or demonstrates that we've swept key underlying assumptions under the rug - it becomes much more than a search for knowledge. It feels like a personal assault."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"A faith-healer may or may not start out with fraud in mind. But to his amazement, his patients actually seem to be improving. Their emotions are genuine, their gratitude heart-felt. When the healer is criticized, such people rush to his defence. Several elderly attendees of the channelling at the Sydney Opera House were incensed after the Sixty Minutes expose: 'Never mind what they say,' they told Alvarez, 'we believe in you`.
These successes may be enough to convince many charlatans, no matter how cynical they were at the beginning, that they actually have mystical powers. Maybe they're not successful every time. The powers come and go, they tell themselves. They have to cover the down time. If they must cheat a little now and then, it serves a higher purpose, they tell themselves. Their spiel is consumer-tested. It works."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"In every such society, there is a cherished world of myth and metaphor which co-exists with the workaday world. Efforts to reconcile the two are made, and any rough edges at the joints tend to be off-limits and ignored. We compartmentalize. Some scientists do this too, effortlessly stepping between the skeptical world of science and the credulous world of religious belief without skipping a beat. Of course, the greater the mismatch between these two worlds, the more difficult it is to be comfortable, with untroubled conscience, with both."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"the consequences of scientific illiteracy are far more dangerous in our time than in any that has come before. It's perilous and foolhardy for the average citizen to remain ignorant about global warming, say, or ozone depletion, air pollution, toxic and radioactive wastes, acid rain, topsoil erosion, tropical deforestation, exponential population growth. Jobs and wages depend on science and technology. If our nation can't manufacture, at high quality and low price, products people want to buy, then industries will continue to drift away and transfer a little more prosperity to other parts of the world. Consider the social ramifications of fission and fusion power, supercomputers, data "highways," abortion, radon, massive reductions in strategic weapons, addiction, government eavesdropping on the lives of its citizens, high-resolution TV, airline and airport safety, fetal tissue transplants, health costs, food additives, drugs to ameliorate mania or depression or schizophrenia, animal rights, superconductivity, morning-after pills, alleged hereditary antisocial predispositions, space stations, going to Mars, finding cures for AIDS and cancer. How can we affect national policy—or even make intelligent decisions in our own lives—if we don't grasp the underlying issues?"
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"In the diagnosis of disease, Hippocrates introduced elements of the scientific method. He urged careful and meticulous observation: "Leave nothing to chance. Overlook nothing. Combine contradictory observations. Allow yourself enough time."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Science is more than a body of knowledge; it is a way of thinking. I have a foreboding of an America in my children's or grandchildren's time—when the United States is a service and information economy; when nearly all the key manufacturing industries have slipped away to other countries; when awesome technological powers are in the hands of a very few, and no one representing the public interest can even grasp the issues; when the people have lost the ability to set their own agendas or knowledgeably question those in authority; when, clutching our crystals and nervously consulting our horoscopes, our critical faculties in decline, unable to distinguish between what feels good and what's true, we slide, almost without noticing, back into superstition and darkness."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Just as there are those who accept every UFO report at face value, there are also those who dismiss the idea of alien visitation out of hand and with great passion. It is, they say, unnecessary to examine the evidence, and "unscientific" even to contemplate the issue. I once helped to organize a public debate at the annual meeting of the American Association for the Advancement of Science between proponent and opponent scientists of the proposition that some UFOs were spaceships; whereupon a distinguished physicist, whose judgment in many other matters I respected, threatened to sic the Vice President of the United States on me if I persisted in this madness. (Nevertheless, the debate was held and published, the issues were a little better clarified, and I did not hear from Spiro T. Agnew.)"
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"It is a fact of life on our beleaguered little planet that widespread torture, famine and governmental criminal irresponsibility are much more likely to be found in tyrannical than in democratic governments. Why? Because the rulers of the former are much less likely to be thrown out of office for their misdeeds than the rulers of the latter. This is error-correcting machinery in politics. The methods of science, with all its imperfections, can be used to improve social, political and economic systems, and this is, I think, true no matter what criterion of improvement is adopted. How is this possible if science is based on experiment? Humans are not electrons or laboratory rats. But every act of Congress, every Supreme Court decision, every Presidential National Security Directive, every change in the Prime Rate is an experiment. Every shift in economic policy, every increase or decrease in funding for Head Start, every toughening of criminal sentences is an experiment. Exchanging needles, making condoms freely available, or decriminalizing marijuana are all experiments. Doing nothing to help Abyssinia against Italy, or to prevent Nazi Germany from invading the Rhineland was an experiment. Communism in Eastern Europe, the Soviet Union and China was an experiment. Privatizing mental health care or prisons is an experiment. Japan and West Germany investing a great deal in science and technology and next to nothing on defense - and finding that their economies boomed - was an experiment. Handguns are available for self-protection in Seattle, but not in nearby Vancouver, Canada; handgun killings are five times more common in Seattle and the handgun suicide rate is ten times greater in Seattle. Guns make impulsive killing easy. This is also an experiment. In almost all of these cases, adequate control experiments are not performed, or variables are insufficiently separated. Nevertheless, to a certain and often useful degree, such ideas can be tested. The great waste would be to ignore the results of social experiments because they seem to be ideologically unpalatable."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Condon, quick on his feet, replied that the accusation was untrue. He was not a revolutionary in physics. He raised his right hand: "I believe in Archimedes' Principle, formulated in the third century B.C. I believe in Kepler's laws of planetary motion, discovered in the seventeenth century. I believe in Newton's laws.…" And on he went, invoking the illustrious names of Bernoulli, Fourier, Ampère, Boltzmann, and Maxwell."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"But we have no [Marian] apparitions cautioning the Church against, say, accepting the delusion of an Earth-centered Universe, or warning it of complicity with Nazi Germany — two matters of considerable moral as well as historical import....

Not a single saint criticized the practice of torturing and burning "witches" and heretics. Why not? Were they unaware of what was going on? Could they not grasp its evil? And why is [the Virgin] Mary always admonishing the poor peasant to inform the authorities? Why doesn't she admonish the authorities herself? Or the King? Or the Pope?"
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Whenever our ethnic or national prejudices are aroused, in times of scarcity, during challenges to national self-esteem or nerve, when we agonize about our diminished cosmic place and purpose, or when fanaticism is bubbling up around us—then, habits of thought familiar from ages past reach for the controls. The candle flame gutters. Its little pool of light trembles. Darkness gathers. The demons begin to stir."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"En lugar de juzgar a la gente por sus méritos y defectos individuales, nos concentramos en un par de detalles de información sobre ellos y a continuación los colocamos en una serie de casillas previamente establecidas.
Con eso nos ahorramos el esfuerzo de pensar, al precio en muchos casos de cometer una profunda injusticia."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"Part of the success of the tobacco industry in purveying this brew of addictive poisons can be attributed to widespread unfamiliarity with baloney detection, critical thinking, and the scientific method. Gullibility kills."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"The witch mania is shameful. How could we do it? How could we be so ignorant about ourselves and our weaknesses? How could it have happened in the most "advanced," the most "civilized" nations then on Earth? Why was it resolutely supported by conservatives, monarchists, and religious fundamentalists? Why opposed by liberals, Quakers and followers of the Enlightenment? If we're absolutely sure that our beliefs are right, and those of others wrong; that we are motivated by good, and others by evil; that the King of the Universe speaks to us, and not to adherents of very different faiths; that it is wicked to challenge conventional doctrines or to ask searching questions; that our main job is to believe and obey - then the witch mania will recur in its infinite variations down to the time of the last man. Note Friedrich von Spee's very first point, and the implication that improved public understanding of superstition and skepticism might have helped to short-circuit the whole train of causality. If we fail to understand how it worked in the last round, we will not recognize it as it emerges in the next."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

"It is possible - given absolute control over the media and the police - to rewrite the memories of hundreds of millions of people, if you have a generation to accomplish it in. Almost always, this is done to improve the hold that the powerful have on power, or to serve the narcissism or megalomania or paranoia of national leaders. It throws a monkey wrench into the error-correcting machinery. It works to erase public memory of profound political mistakes, and thus to guarantee their eventual repetition.

In our time, with total fabrication of realistic stills, motion pictures, and videotapes technologically within reach, with television in every home, and with critical thinking in decline, restructuring societal memories even without much attention from the secret police seems possible. What I'm imagining here is not that each of us has a budget of memories implanted in special therapeutic sessions by state-appointed psychiatrists, but rather that small numbers of people will have so much control over news stories, history books, and deeply affecting images as to work major changes in collective attitudes."
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

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