If we continue to accumulate only power and not wisdom, we will surely destroy ourselves. — Carl Sagan Copy Share Image
If you want to save your child from polio, you can pray or you can inoculate…Try science. — Carl Sagan Copy Share Image
If we do not speak for Earth, who will? If we are not committed to our own survival, who will be? — Carl Sagan Copy Share Image
If we say that God has always been, why not save a step and conclude that the universe has always been? — Carl Sagan Copy Share Image
If you want to make a [rhubarb] pie from scratch, first you have to create the universe. — Carl Sagan Copy Share Image
In a complex universe, in a society undergoing unprecedented change, how can we find the truth if we are not willing to… — Carl Sagan Copy Share Image
The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of… — 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
In Mozambique, the story goes, monkeys do not talk, because they know if they utter even a single word some man will… — Carl Sagan Copy Share Image
If we can't think for ourselves, if we're unwilling to question authority, then we're just putty in the hands of those in… — Carl Sagan Copy Share Image
Demon mean knowledge in Greek, especially about the material world. Science means knowledge in Latin. A jurisdictional dispute is exposed, even if… — Carl Sagan Copy Share Image
If our long-term survival is at stake, we have a basic responsibility to our species to venture to other worlds. Sailors on… — Carl Sagan Copy Share Image
Where did God come from? If we decide this is an unanswerable question why not save a step and conclude that the… — 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
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
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
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
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
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
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 idea of a spiritual part of our nature that survives death, the notion of an afterlife, ought to be easy for… — Carl Sagan Copy Share Image
(When asked merely if they accept evolution, 45 percent of Americans say yes. The figure is 70 percent in China.) When the… — 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
The claim is also sometimes made that science is as arbitrary or irrational as all other claims to knowledge, or that reason… — 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
Better by far to embrace the hard truth than a reassuring fable. If we crave some cosmic purpose, then let us find… — Carl Sagan Copy Share Image
If there is life, then I believe we should do nothing to disturb that life. Mars then, belongs to the Martians, even… — Carl Sagan Copy Share Image
Discussing the possibilities of extraterrestrial life: I would love it even if they were short, sullen, grumpy and sexually obsessed. But there… — Carl Sagan Copy Share Image
I hold that popularization of science is successful if, at first, it does no more than spark the sense of wonder. — Carl Sagan Copy Share Image
If the constellations had been named in the twentieth century, I suppose we would see bicycles and refrigerators in the sky. — 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
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
If we are to survive, our loyalties must be broadened further, to include the whole human community, the entire planet Earth. — 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
![“If you want to make a [rhubarb] pie from scratch, first you have to create the universe.” quote by Carl Sagan](https://sms4smile.com/quotes/i/813/carl-sagan-160_create_if-you-want-to-make-a-rhubarb-pie-from-s_2832861.jpg)
![“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/i/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/i/bbf/carl-sagan-160_criticism_n-o-scientist-likes-to-be-criticized-but_877385.jpg)
