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Carl Sagan

Carl Sagan Quotes

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Famous Carl Sagan Quotes

“Stereotypes abound. [...] The most generous interpretation ascribes it to a kind of intellectual laziness: instead of judging people on their individual merits and deficits, we concentrate on one or two bits of information about them, and then place them in a small number of previously constructed pigeonholes. This saves the trouble of thinking, at the price in many cases of committing a profound injustice. It also shields the stereotyper from contact with the enormous variety of people, the multiplicity of ways of being human. Even if stereotyping were valid on average, it is bound to fail in many individual cases.”

Science
Book:The Demon-Haunted World: Science as a Candle in the Dark
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“We tend to hear much more about the splendors returned than the ships that brought them or the shipwrights. It has always been that way. Even those history books enamored of the voyages of Christopher Columbus do not tell much about the builders of the Nina the Pinta and the Santa Maria or about the principle of the caravel. These spacecraft their designers builders navigators and controllers are examples of what science and engineering set free for well-defined peaceful purposes can accomplish. Those scientists and engineers should be role models for an America seeking excellence and international competitiveness. They should be on our stamps.”

ScienceSpaceExplorationRole ModelsEngineeringScientists
Book:Pale Blue Dot: A Vision of the Human Future in Space
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“X "La ciencia es más que un cuerpo de conocimiento, es una manera de pensar. Tengo un presagio de la época de mis hijos o mis nietos, cuando Estados Unidos sea una economía de servicios e información; cuando casi todas las principales industrias manufactureras se hayan ido a otros países; cuando los increíbles poderes tecnológicos estén en manos de muy pocos, y nadie que represente el interés público pueda siquiera comprender los problemas; cuando la gente haya perdido la capacidad de establecer sus propias agendas o cuestionar sabiamente a los que tienen autoridad; cuando, abrazados a nuestras bolas de cristal y consultando nerviosamente nuestros horóscopos, con nuestras facultades críticas en declive, incapaces de distinguir entre lo que se siente bien y lo que es verdad, nos deslicemos de vuelta, casi sin darnos cuenta, en la superstición y la oscuridad. La caída en la estupidez de Norteamérica se hace evidente principalmente en la lenta decadencia del contenido de los medios de comunicación, de enorme influencia, las cuñas de sonido de treinta segundos (ahora reducidas a diez o menos), la programación de nivel ínfimo, las crédulas presentaciones de pseudociencia y superstición, pero sobre todo en una especie de celebración de la ignorancia.”

ScienceEducationSkepticismCritical ThinkingSuperstitionRationalismPseudoscienceAnti IntellectualismTechnocracy
Book:The Demon-Haunted World: Science as a Candle in the Dark
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“La ciencia es más que un cuerpo de conocimiento, es una manera de pensar. Tengo un presagio de la época de mis hijos o mis nietos, cuando Estados Unidos sea una economía de servicios e información; cuando casi todas las principales industrias manufactureras se hayan ido a otros países; cuando los increíbles poderes tecnológicos estén en manos de muy pocos, y nadie que represente el interés público pueda si quiera comprender los problemas; cuando la gente haya perdido la capacidad de establecer sus propias agendas o cuestionar sabiamente a los que tienen autoridad; cuando, abrazados a nuestras bolas de cristal y consultando nerviosamente nuestros horóscopos, con nuestras facultades críticas en declive, incapaces de distinguir entre lo que se siente bien y lo que es verdad, nos deslicemos de vuelta, casi sin darnos cuenta, en la superstición y la oscuridad. La caída en la estupidez de Norteamérica se hace evidente principalmente en la lenta decadencia del contenido de los medios de comunicación, de enorme influencia, las cuñas de sonido de treinta segundos (ahora reducidas a diez o menos), la programación de nivel ínfimo, las crédulas presentaciones de pseudociencia y superstición, pero sobre todo en una especie de celebración de la ignorancia.”

ScienceEducationSkepticismCritical ThinkingSuperstitionRationalismPseudoscienceAnti IntellectualismTechnocracy
Book:The Demon-Haunted World: Science as a Candle in the Dark
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“The surface of the Earth is the shore of the cosmic ocean. From it we have learned most of what we know. Recently, we have waded a little out to sea, enough to dampen our toes or, at most, wet our ankles. The water seems inviting. The ocean calls. Some part of our being knows this is from where we came. We long to return. These aspirations are not, I think, irreverent, although they may trouble whatever gods may be.”

ScienceAstronomy
Book:Cosmos
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“[The inquisitors] could not be mistaken. The confessions of witchcraft could not be based on hallucinations, say, or desperate attempts to satisfy the inquisitors and stop the torture. In such a case, explained the witch judge Pierre de Lancre (in his 1612 book, *Description of the Inconstancy of Evil Angels*), the Catholic Church would be committing a great crime by burning witches. Those who raise such possibilities are thus attacking the Church and ipso facto committing a mortal sin. Critics of witch-burning were punished and, in some cases, themselves burnt. The inquisitors and torturers were doing God's work. They were saving souls. They were foiling demons.”

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Book:The Demon-Haunted World: Science as a Candle in the Dark
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“From this distant vantage point, the Earth might not seem of any particular interest. But for us, it's different. Consider again that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every "superstar," every "supreme leader," every saint and sinner in the history of our species lived there – on a mote of dust suspended in a sunbeam. The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds. Our posturings, our imagined self-importance, the delusion that we have some privileged position in the Universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves. The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand. It has been said that astronomy is a humbling and character-building experience. There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another, and to preserve and cherish the pale blue dot, the only home we've ever known.”

InspirationalScienceHumblingBeautiful Quote
Book:Pale Blue Dot: A Vision of the Human Future in Space
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“Look again at that (blue) dot (Earth seen from space). That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you have ever heard of, every human being who ever was, lived out their lives...There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another, and to preserve and cherish the pale blue dot, the only home we've ever known.”

InspirationalScience
Book:Pale Blue Dot: A Vision of the Human Future in Space
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“Volcanos have naturally been regarded with fear and awe. When medieval Christians viewed the eruption of Mt. Hekla in Inceland and saw churning fragments of soft lava suspended over the summit, they imagined they were seeing the souls of the damned awaiting entrance to Hell. "Fearful howlings, weeping and gnashing of teeth", "melancholy cries and loud wailings" were dutifully reported. The glowing red lakes and sulfurous gases within the Hekla caldera were thought to be a real glimpse into the underworld and confirmation of folk beliefs in Hell (and, by simmetry, in its partner, Heaven).”

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Book:Pale Blue Dot: A Vision of the Human Future in Space
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“الرؤى التي نطرحها على أطفالنا تسهم في تشكيل المستقبل، ومن المهم بالنسبة للمستقبل ما تكون عليه هذه الرؤى. فكثيرا ما تصبح الرؤى نبواءات بالتحقيق الذاتي للمرام. إن الأحلام خرائط.”

ChildrenEducationDreamsFuture
Book:Pale Blue Dot: A Vision of the Human Future in Space
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“There is another connection between infancy and dreams: both are followed by amnesia. When we emerge from either state, we have great difficulty remembering what we have experienced. In both cases, I would suggest, the left hemisphere of the neocortex, which is responsible for analytic recollection, has been functioning ineffectively.”

SleepDreamsHuman Brain
Book:The Dragons of Eden: Speculations on the Evolution of Human Intelligence
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“What functions do dreams serve today? One view, published in a reputable scientific paper, holds that the function of dreams is to wake us up a little, every now and then, to see if anyone is about to eat us. But dreams occupy such a relatively small part of normal sleep that this explanation does not seem very compelling. Moreover, as we have seen, the evidence points just the other way: today it is the mammalian predators, not the mammalian prey, who characteristically have dream-filled sleep.”

SleepDreamsHuman Evolution
Book:The Dragons of Eden: Speculations on the Evolution of Human Intelligence
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“Much more plausible is the computer-based explanation that dreams are a spillover from the unconscious processing of the day's experience, from the brain's decision on how much of the daily events temporarily stored in a kind of buffer to emplace in long-term memory... The American psychiatrist Ernest Hartmann of Tufts University has provided anecdotal but reasonably persuasive evidence that people who are engaged in intellectual activities during the day, especially unfamiliar intellectual activities, require more sleep at night, while, by and large, those engaged in mainly repetitive and intellectually unchallenging tasks are able to do with much less sleep.”

SleepDreamsEvolutionHuman Behavior
Book:The Dragons of Eden: Speculations on the Evolution of Human Intelligence
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“However, in part for reasons of organizational convenience, modern societies are structured as if all humans had the same sleep requirements; and in many parts of the world there is a satisfying sense of moral rectitude in rising early. The amount of sleep required for buffer dumping would then depend on how much we have both thought and experienced since the last sleep period.”

SleepDreamsHuman Behavior
Book:The Dragons of Eden: Speculations on the Evolution of Human Intelligence
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“This looks very much as if the integration of the day's experience into our memory, the forging of new neural links, is either an easier or a more urgent task. As the night wears on and this function is completed, the more affecting dreams, the more bizarre material, the fears and lusts and other powerful emotions of the dream material emerge.”

SleepDreamsHuman Brain
Book:The Dragons of Eden: Speculations on the Evolution of Human Intelligence
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“There is some evidence that dreaming is necessary. When people or other mammals are deprived of REM sleep (by awakening them as soon as the characteristic REM and EEG dream patterns emerge), the number of initiations of the dream state per night goes up, and, in severe cases, daytime hallucinations-that is, waking dreams-occur.”

SleepDreamsHuman Brain
Book:The Dragons of Eden: Speculations on the Evolution of Human Intelligence
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“Human history can be viewed as a slowly dawning awareness that we are members of a larger group. Initially our loyalties were to ourselves and our immediate family, next, to bands of wandering hunter-gatherers, then to tribes, small settlements, city-states, nations. We have broadened the circle of those we love. We have now organized what are modestly described as super-powers, which include groups of people from divergent ethnic and cultural backgrounds working in some sense together — surely a humanizing and character building experience. If we are to survive, our loyalties must be broadened further, to include the whole human community, the entire planet Earth. Many of those who run the nations will find this idea unpleasant. They will fear the loss of power. We will hear much about treason and disloyalty. Rich nation-states will have to share their wealth with poor ones. But the choice, as H. G. Wells once said in a different context, is clearly the universe or nothing.”

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Book:Cosmos
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“We have held the peculiar notion that a person or society that is a little different from us, whoever we are, is somehow strange or bizarre, to be distrusted or loathed. Think of the negative connotations of words like alien or outlandish. And yet the monuments and cultures of each of our civilizations merely represent different ways of being human. An extraterrestrial visitor, looking at the differences among human beings and their societies, would find those differences trivial compared to the similarities. The Cosmos may be densely populated with intelligent beings. But the Darwinian lesson is clear: There will be no humans elsewhere. Only here. Only on this small planet. We are a rare as well as an endangered species. Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.”

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Book:Cosmos
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“I have a foreboding of an America in my children's or grandchildren's time - [...] 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.”

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Author:Carl Sagan
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