Anything else you're interested in is not going to happen if you can't breathe the air and drink the water. Don't sit… — Carl Sagan Copy Share Image
If you look at Earth from space you see a dot, that's here. That's home. That's us. It underscores the responsibility to… — Carl Sagan Copy Share Image
In many cultures it is customary to answer that God created the universe out of nothing. But this is mere temporizing. If… — Carl Sagan Copy Share Image
What a splendid perspective contact with a profoundly different civilization might provide! In a cosmic setting vast and old beyond ordinary human… — Carl Sagan Copy Share Image
If chimpanzees have consciousness, if they are capable of abstractions, do they not have what until now has been described as 'human… — Carl Sagan Copy Share Image
Human history can be viewed as a slowly dawning awareness that we are members of a larger group Groups of people from… — Carl Sagan Copy Share Image
It seems madness to say, 'We're worried that they're going to become addicted to marijuana' -- there's no evidence whatever that it's… — Carl Sagan Copy Share Image
We are rare and precious because we are alive, because we can think as well as we can. We are privileged to… — Carl Sagan Copy Share Image
[N]o scientist likes to be criticized. ... But you don't reply to critics: "Wait a minute, wait a minute; this is a… — 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
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
When you buy a used car, you kick the tires, you look at the odometer, you open up the hood. If you… — Carl Sagan Copy Share Image
Since, in the long run, every planetary society will be endangered by impacts from space, every surviving civilization is obliged to become… — 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
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 some good evidence for life after death were announced, I'd be eager to examine it; but it would have to be… — Carl Sagan Copy Share Image
If intelligence is our only edge, we must learn to use it better, to shape it, to understand its limitations and deficiencies… — 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
![“Human history can be viewed as a slowly dawning awareness that we are members of a larger group Groups of people from divergent ethnic and cultural backgrounds working in some sense together [is] surely a humanizing and character building experience. If we are to survive, our loyalties must be…” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/368/carl-sagan-160_awareness_human-history-can-be-viewed-as-a-slowly_3106338.jpg)
![“[N]o scientist likes to be criticized. ... But you don't reply to critics: "Wait a minute, wait a minute; this is a really good idea. I'm very fond of it. It's done you no harm. Please don't attack it." That's not the way it goes. The hard but just rule is that if the ideas don't work, you must…” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/bbf/carl-sagan-160_criticism_n-o-scientist-likes-to-be-criticized-but_877385.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)
