Ours is the first generation that has grown up with science-fiction ideas. — Carl Sagan Copy Share Image
“Those are some of the things that molecules do, given four billion years of evolution” — Carl Sagan Copy Share Image
One of the great commandments of science is: 'Mistrust arguments from authority.' — Carl Sagan Copy Share Image
Science is far from a perfect instrument of knowledge. It's just the best we have. — Carl Sagan Copy Share Image
You can get into a habit of thought in which you enjoy making fun of all those other people who don't see… — Carl Sagan Copy Share Image
“The secrets of evolution, are time and death. There's an unbroken thread that stretches from those first cells to us.” — Carl Sagan Copy Share Image
We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what… — Carl Sagan Copy Share Image
“Significant change might require those who are now high in the hierarchy to move downward many steps. This seems to them undesirable… — Carl Sagan Copy Share Image
Science is a collaborative enterprise, spanning the generations. When it permits us to see the far side of some new horizon, we… — Carl Sagan Copy Share Image
“We are alive and we resonate with idea of life elsewhere, but only careful accumulation and assessment of the evidence can tell… — Carl Sagan Copy Share Image
Science is a bulwark against mysticism, against superstition, against religion misapplied to where it has no business being. — Carl Sagan Copy Share Image
“For ages men had used sticks to club and spear each other—Anaximander of Miletus used the stick to measure time.” — Carl Sagan Copy Share Image
A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds… — Carl Sagan Copy Share Image
A new consciousness is developing which sees the earth as a single organism and recognizes that an organism at war with itself… — 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
National boundaries are not evident when we view the Earth from space. Fanatical ethnic or religious or national chauvinisms are a little… — Carl Sagan Copy Share Image
“The American and Russian capabilities in space science and technology mesh; they interdigitate. Each is strong where the other is weak. This… — Carl Sagan Copy Share Image
“In the diagnosis of disease, Hippocrates introduced elements of the scientific method. He urged careful and meticulous observation: “Leave nothing to chance.… — Carl Sagan Copy Share Image
We all have a thirst for wonder. It's a deeply human quality. Science and religion are both bound up with it. What… — Carl Sagan Copy Share Image
Who is more humble? The scientist who looks at the universe with an open mind and accepts whatever the universe has to… — Carl Sagan Copy Share Image
“Science is more than a body of knowledge. It is a way of thinking; a way of skeptically interrogating the universe with… — Carl Sagan Copy Share Image
“deluded or not, supporters of superstition and pseudoscience are human beings with real feelings, who, like the skeptics, are trying to figure… — 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
“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
“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
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
[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
Imagine a room awash in gasoline, and there are two implacable enemies in that room. One of them has nine thousand matches.… — Carl Sagan Copy Share Image
Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system… — Carl Sagan Copy Share Image
“The method of science, as stodgy and grumpy as it may seem, is far more important than the findings of science.” — Carl Sagan Copy Share Image
“All our science, measured against reality, is primitive and childlike—and yet it is the most precious thing we have. ALBERT EINSTEIN (1879–1955)” — Carl Sagan Copy Share Image
In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken..." — Carl Sagan Copy Share Image
“Pseudoscience speaks to powerful emotional needs that science often leaves unfulfilled. It caters to fantasies about personal powers we lack and long… — Carl Sagan Copy Share Image
“When you're in love, you want to tell the world. This book is a personal statement, reflecting my lifelong love affair with… — Carl Sagan Copy Share Image
There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths. — 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 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
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
If the greenhouse effect is a blanket in which we wrap ourselves to keep warm, nuclear winter kicks the blanket off. — 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
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
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
“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
“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
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
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
“[ 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
“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
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
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
Any sufficiently crisp question can be answered by a single binary digit-0 or 1, yes or no. — Carl Sagan Copy Share
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