I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence. — Carl Sagan Copy Share Image
Science is not perfect. It's often misused; it's only a tool, but it's the best tool we have. Self-correcting , ever changing,… — Carl Sagan Copy Share Image
I find science so much more fascinating than science fiction. It also has the advantage of being true. — Carl Sagan Copy Share Image
“Pseudoscience is embraced, it might be argued, in exact proportion as real science is misunderstood—except” — Carl Sagan Copy Share Image
“Science cuts two ways, of course; its products can be used for both good and evil. But there's no turning back from… — Carl Sagan Copy Share Image
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology. — Carl Sagan Copy Share Image
How is it that hardly any major religion has looked at science and concluded, “This is better than we thought! The Universe… — Carl Sagan Copy Share Image
“Science is an ongoing process. It never ends. There is no single ultimate truth to be achieved, after which all the scientists… — Carl Sagan Copy Share Image
Arguments from authority carry little weight – authorities have made mistakes in the past. They will do so again in the future.… — Carl Sagan Copy Share Image
“Paid product endorsements, especially by real or purported experts, constitute a steady rainfall of deception. They betray contempt for the intelligence of… — Carl Sagan Copy Share Image
Scientists make mistakes. Accordingly, it is the job of the scientist to recognize our weakness, to examine the widest range of opinions,… — Carl Sagan Copy Share Image
“We've arranged a global civilization in which most crucial elements profoundly depend on science and technology. We have also arranged things so… — Carl Sagan Copy Share Image
There are many instances in science, where those closest to the intricacies of the subject have a more highly developed sense of… — Carl Sagan Copy Share Image
Probably a dozen times since their death I've heard my mother or father, in an ordinary conversational tone of voice, call my… — Carl Sagan Copy Share Image
“...that kind of skeptical questioning, don't accept what authority tells you -attitude of science- is also nearly identical to the attitude of… — Carl Sagan Copy Share Image
If we teach only the findings and products of science - no matter how useful and even inspiring they may be -… — Carl Sagan Copy Share Image
“The best way to avoid abuses is for the populace in general to be scientifically literate, to understand the implications of such… — Carl Sagan Copy Share Image
Is it fair to be suspicious of an entire profession because of a few bad apples? There are at least two important… — Carl Sagan Copy Share Image
“The scope and audacity of John Kennedy’s May 25, 1961, message to a joint session of Congress on “Urgent National Needs”—the speech… — Carl Sagan Copy Share Image
“The major religions on the Earth contradict each other left and right. You can't all be correct. And what if all of… — Carl Sagan Copy Share Image
“I'm frequently asked, "Do you believe there's extraterrestrial intelligence?" I give the standard arguments- there are a lot of places out there,… — Carl Sagan Copy Share Image
“We inhabit a universe where atoms are made in the centers of stars; where each second a thousand suns are born; where… — Carl Sagan Copy Share Image
[Science] is not perfect. It can be misused. It is only a tool. But it is by far the best tool we… — Carl Sagan Copy Share Image
If you are only skeptical, then no new ideas make it through to you. You become a crotchety old person convinced that… — Carl Sagan Copy Share Image
The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but… — Carl Sagan Copy Share Image
There are many hypotheses in science which are wrong. That’s perfectly all right: it’s the aperture to finding out what’s right. Science… — Carl Sagan Copy Share Image
“[...] science carries us towards an understanding of how the world is, rather than how we would wish it to be [...]” — Carl Sagan Copy Share Image
“Claims that cannot be tested, assertions immune to disproof are veridically worthless, whatever value the may have in inspiring us or in… — carl sagan Copy Share Image
Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves. — Carl Sagan Copy Share Image
The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together. — Carl Sagan Copy Share Image
“Science is based on experiment, on a willingness to challenge old dogma, on an openness to see the universe as it really… — Carl Sagan Copy Share Image
“On Titan the molecules that have been raining down like manna from heaven for the last 4 billion years might still be… — Carl Sagan Copy Share Image
The method of science is tried and true. It is not perfect, it's just the best we have. And to abandon it,… — Carl Sagan Copy Share Image
A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism. — Carl Sagan Copy Share Image
“The values of science and the values of democracy are concordant, in many cases indistinguishable.” — Carl Sagan Copy Share Image
Has there ever been a religion with the prophetic accuracy and reliability of science? . . . No other human institution comes close. — Carl Sagan Copy Share Image
Science is more than a body of knowledge. It's a way of thinking: a way of skeptically interrogating the universe. — Carl Sagan Copy Share Image
The size and age of the Cosmos are beyond ordinary human understanding. Lost somewhere between immensity and eternity is our tiny planetary… — Carl Sagan Copy Share Image
“The suppression of uncomfortable ideas may be common in religion and politics, but it is not the path to knowledge; it has… — Carl Sagan Copy Share Image
“Meanwhile the Cosmos is rich beyond measure: the total number of stars in the universe is greater than all the grains of… — Carl Sagan Copy Share Image
It is sometimes said that scientists are unromantic, that their passion to figure out robs the world of beauty and mystery. But is it… — Carl Sagan Copy Share Image
The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but rather from… — Carl Sagan Copy Share Image
The suppression of uncomfortable ideas may be common in religion or in politics, but it is not the path to knowledge; it has no… — Carl Sagan Copy Share Image
“Telepathy’ literally means to feel at a distance, just as ‘telephone’ is to hear at a distance and ‘television’ is to see at a… — Carl Sagan Copy Share Image
“On the scale of worlds—to say nothing of stars or galaxies—humans are inconsequential, a thin film of life on an obscure and solitary lump… — Carl Sagan Copy Share Image
Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies,… — Carl Sagan Copy Share Image
In our time, we have sifted the sands of Mars, we have established a presence there, we have fulfilled a century of dreams! — Carl Sagan Copy Share Image
“[ When a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996 :] If ‘fulfilled prophecy’ is your criterion,… — Carl Sagan Copy Share Image
“Books permit us to voyage through time, to tap the wisdom of our ancestors. The library connects us with the insight and knowledge, painfully… — Carl Sagan Copy Share Image
We live on a hunk of rock and metal that circles a humdrum star that is one of 400 billion other stars that make… — Carl Sagan Copy Share Image
A tiny blue dot set in a sunbeam. Here it is. That's where we live. That's home. We humans are one species and this… — Carl Sagan Copy Share Image
Any sufficiently crisp question can be answered by a single binary digit-0 or 1, yes or no. — Carl Sagan Copy Share Image
Humans — who enslave, castrate, experiment on, and fillet other animals — have had an understandable penchant for pretending animals do not feel pain.… — Carl Sagan Copy Share Image
![“[Science] is not perfect. It can be misused. It is only a tool. But it is by far the best tool we have, self-correcting, ongoing, applicable to everything. It has two rules. First: there are no sacred truths; all assumptions must be critically examined; arguments from authority are worthless…” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/0b3/carl-sagan-160_argument_science-is-not-perfect-it-can-be-misused_2558360.jpg)
![“[...] science carries us towards an understanding of how the world is, rather than how we would wish it to be [...]” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/715/carl-sagan-160_knowledge_science-carries-us-towards-an-understand_85840.jpg)
![“[ When a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996 :] If ‘fulfilled prophecy’ is your criterion, why do you not believe in materialistic science, which has an unparalleled record of fulfilled prophecy? Consider, for example, eclipses.” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/875/carl-sagan-160_belief_when-a-religious-couple-wrote-to-sagan-a_25095.jpg)
