Perhaps, in retrospect, there would be little motivation even for malevolent extraterrestrials to attack the Earth; perhaps, after a preliminary survey, they… — Carl Sagan Copy Share Image
Science arouses a soaring sense of wonder. But so does pseudoscience. Sparse and poor popularizations of science abandon ecological niches that pseudoscience… — Carl Sagan Copy Share Image
It would be wryly interesting if in human history the cultivation of marijuana led generally to the invention of agriculture, and thereby… — Carl Sagan Copy Share Image
My deeply held belief is that if a god of anything like the traditional sort exists, our curiosity and intelligence are provided… — Carl Sagan Copy Share Image
I would be very ashamed of my civilization if we did not try to find out if there is life in outer… — Carl Sagan Copy Share Image
There are many hypotheses in physics of almost comparable brillance and elegance that have been rejected because they did not survive such… — Carl Sagan Copy Share Image
We are, in a way, temporary ambulatory repositories for our nucleic acids. This does not deny our humanity; it does not prevent… — Carl Sagan Copy Share Image
It is all a matter of time scale. An event that would be unthinkable in a hundred years may be inevitable in… — Carl Sagan Copy Share Image
Quickly capping 363 oil well fires in a war zone is impossible. The fires would burn out of control until they put… — Carl Sagan Copy Share Image
For myself, I like a universe that, includes much that is unknown and, at the same time, much that is knowable. A… — Carl Sagan Copy Share Image
My deeply held belief is that if a god of anything like the traditional sort exists, our curiosity and intelligence is provided… — Carl Sagan Copy Share Image
If we could travel into the past, it's mind-boggling what would be possible. For one thing, history would become an experimental science,… — 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
A blade of grass is a commonplace on Earth; it would be a miracle on Mars. Our descendants on Mars will know… — 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
![“Quickly capping 363 oil well fires in a war zone is impossible. The fires would burn out of control until they put themselves out... The resulting soot might well stretch over all of South Asia... It could be carried around the world... [and] the consequences could be dire. Beneath such a pall…” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/a7d/carl-sagan-160_around-the-world_quickly-capping-363-oil-well-fires-in-a_1517692.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)
