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Quotes by Scientist

"Nothing interferes with my concentration. You could put on an orgy in my office and I wouldn't look up. Well maybe once."

"It is above all in the present democratic age that the true friends of liberty and human grandeur must remain constantly vigilant and ready to prevent the social power from lightly sacrificing the particular rights of a few individuals to the general execution of its designs. In such times there is no citizen so obscure that it is not very dangerous to allow him to be oppressed, and there are no individual rights so unimportant that they can be sacrificed to arbitrariness with impunity."


"As technology accumulates and people in more parts of the planet become interdependent, the hatred between them tends to decrease, for the simple reason that you can't kill someone and trade with him too."

"Only a person who is motivated in the inner depths of his being will help without hesitation and with no obligation for the one helped."

"The school systems, it seems to me have a attitude of discouragement of asking fundamental questions, if a 5 or 6 year old asks why the moon is round or why the grass is green? The usual adult answer, at least in my experience is to discourage the child.what color did you expect the moon to be? square? what color you expect the grass to be?blue?Instead of saying that those are interesting questions and lets try to find the answers or maybe nobody knows the answers and when you grow up you would be able to discover the answers.It would be very healthy for human species if we could have less discouragement and more scientists. - Carl Sagan (In an interview with Magnus Magnusson, 1988)"

"There is every reason to think that in the coming years Mars and its mysteries will become increasingly familiar to the inhabitants of the Planet Earth."

"Evolution is adventitious and not foresighted. Only through the deaths of an immense number of slightly maladapted organisms are we, brains and all, here today."

"Prediction in a complex world is a chancy business. Every decision that a survival machine takes is a gamble, and it is the business of genes to program brains in advance so that on average they take decisions that pay off. The currency used in the casino of evolution is survival, strictly gene survival, but for many purposes individual survival is a reasonable approximation."

"Our difficulties in understanding or effectuatingcommunication with other animals may arise from our reluctance to grasp unfamiliar ways of dealing with the world."

"Don't you believe in flying saucers, they ask me? Don't you believe in telepathy? - in ancient astronauts? - in the Bermuda triangle? - in life after death?No, I reply. No, no, no, no, and again no.One person recently, goaded into desperation by the litany of unrelieved negation, burst out "Don't you believe in anything?"Yes", I said. "I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be."

"It has become appallingly obvious that our technology has exceeded our humanity."

"Life is the greatest teacher because it educates even those who really hate to learn."

"Both of these branches of evolutionary science, are, in my opinion, in the closest causal connection; this arises from the reciprocal action of the laws of heredity and adaptation."

"Try and penetrate with our limited means the secrets of nature and you will find that, behind all the descernible laws and connections, there remains something subtle, intangible and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion. To that extent I am, in fact, religious."

"It is precisely our plasticity, our long childhood, that prevents a slavish adherence to genetically preprogrammed behavior in human beings more than in any other species. Some substantial adjustment of the relative role of each component of the triune brain is well within our powers."

"It is the supreme art of the teacher to awaken joy in creative expression and knowledge."

"It's not that I'm so smart, it's just that I stay with problems longer."

"Imagination is as vital to any advance in science as learning and precision are essential for starting points."

"We've arranged a civilization in which most crucial elements profoundly depend on science and technology."

"Leaders of the future will have to be visionary and be able to bring people in - real communicators. These are things that women bring to leadership and executive positions, and it's going to be incredibly valuable and incredibly in demand."

"I grow grandiose, which is a good sign I should become prosaic."

"Creativity is an amazing human characteristic, which is more connected with curiosity than with knowledge."

"You cannot simultaneously prevent and prepare for war."


"We keep, in science, getting a more and more sophisticated view of our essential ignorance."


"Once we have isolated the computational and neurological correlates of access-consciousness, there is nothing left to explain. It's just irrational to insist that sentience remains unexplained after all the manifestations of sentience have been accounted for, just because the computations don't have anything sentient in them. It's like insisting that wetness remains unexplained even after all the manifestations of wetness have been accounted for, because moving molecules aren't wet."

"If you are out to describe the truth leave elegance to the tailor."


"Because much of the content of education is not cognitively natural, the process of mastering it may not always be easy and pleasant, notwithstanding the mantra that learning is fun. Children may be innately motivated to make friends, acquire status, hone motor skills, and explore the physical world, but they are not necessarily motivated to adapt their cognitive faculties to unnatural tasks like formal mathematics. A family, peer group, and culture that ascribe high status to school achievement may be needed to give a child the motive to persevere toward effortful feats of learning whose rewards are apparent only over the long term."

"I am thankful for all of those who said NO to me. It's because of them I'm doing it myself."


"The decline of violence isn't a steady inclined plane from an original state of maximal and universal bloodshed. Technology, ideology, and social and cultural changes periodically throw out new forms of violence for humanity to contend with."

"I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research."


"Academics lack perspective. In a debate on whether the world is round, they would argue, 'No,' because it's an oblate spheroid. They suffer from 'the curse of knowledge': the inability to imagine what it's like not to know something that they know."

"The short space of threescore years can never content the imagination of man; nor can the imperfect joys of this world satisfy his heart. Man alone, of all created beings, displays a natural contempt of existence, and yet a boundless desire to exist; he scorns life, but he dreads annihilation. These different feelings incessantly urged his soul to the contemplation of a future state, and religion directs his musings thither. Religion, then, is simply another form of hope; and it is no less natural to the human heart than hope itself."

"The God of the Old Testament is arguably the most unpleasant character in all fiction: jealous and proud of it; a petty, unjust, unforgiving control-freak; a vindictive, bloodthirsty ethnic cleanser; a misogynistic, homophobic, racist, infanticidal, genocidal, filicidal, pestilential, megalomaniacal, sadomasochistic, capriciously malevolent bully."

"A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism."

"I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be."

"The way to find out about our place in the universe is by examining the universe and by examining ourselves - without preconceptions, with as unbiased a mind as we can muster."

"It has long been known that the chemical atomic weight of hydrogen was greater than one-quarter of that of helium, but so long as fractional weights were general there was no particular need to explain this fact, nor could any definite conclusions be drawn from it."

"Advertising teaches people not to trust their judgment. Advertising teaches people to be stupid."

"It requires a deliberate mental effort to turn biology the right way up again, and remind ourselves that the replicators come first, in importance as well as in history."

"Science is a way to call the bluff of those who only pretend to knowledge. It is a bulwark against mysticism, against superstition, against religion misapplied to where it has no business being."

"Inside the human mind, an idea is a mental spark that occurs as a response to the challenge of a train of thought."
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