We on Earth have just awakened to the great oceans of space and time from which we have emerged. — Carl Sagan Copy Share Image
“Leave nothing to chance. Overlook nothing. Combine contradictory observations. Allow yourself enough time.” — 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 live at a moment when our relationships to each other, and to all other beings with whom we share this planet,… — 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… — Carl Sagan Copy Share Image
Books permit us to voyage through time, to tap the wisdom of our ancestors. — Carl Sagan Copy Share Image
“Books break the shackles of time. A book is proof that humans are capable of working magic.” — Carl Sagan Copy Share Image
The politicians and the religious leaders and the weapons scientists have been at it for a long time and they've made a… — Carl Sagan Copy Share Image
Once we overcome our fear of being tiny, we find ourselves on the threshold of a vast and awesome Universe that utterly… — 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
“The fossil record implies trial and error, an inability to anticipate the future, features inconsistent with an efficient Great Designer.” — Carl Sagan Copy Share Image
There is today-in a time when old beliefs are withering-a kind of philosophical hunger, a need to know who we are and… — Carl Sagan Copy Share Image
The fossil record implies trial and error, an inability to anticipate the future, features inconsistent with an efficient Great Designer (although not… — Carl Sagan Copy Share Image
“If artificial selection can make such major changes in so short a period of time, what must natural selection, working over billions… — Carl Sagan Copy Share Image
By looking far out into space we are also looking far back into time, back toward the horizon of the universe, back… — Carl Sagan Copy Share Image
“I do not think it irresponsible to portray even the direst futures if we are to avoid them we must understand that… — Carl Sagan Copy Share Image
“Except for hydrogen, all the atoms that make each of us up—the iron in our blood, the calcium in our bones, the… — Carl Sagan Copy Share Image
A proclivity for science is embedded deeply within us, in all times, places, and cultures. It has been the means for our… — Carl Sagan Copy Share Image
“Part of the resistance to Darwin and Wallace derives from our difficulty in imagining the passage of the millennia, much less the… — Carl Sagan Copy Share Image
“If we continue to accumulate only power and not wisdom, we will surely destroy ourselves. Our very existence in that distant time… — Carl Sagan Copy Share Image
Whenever our ethnic or national prejudices are aroused, in times of scarcity, during challenges to national self esteem or nerve, when we… — Carl Sagan Copy Share Image
He sought a way to preserve the past. John Hershel was one of the founders of a new form of time travel…… — Carl Sagan Copy Share Image
We on Earth have just awakened to the great oceans of space and time from which we have emerged. We are the… — 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… — Carl Sagan Copy Share Image
“The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future,… — 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
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
The fossil record implies trial and error, the inability to anticipate the future, features inconsistent with a Great Designer (though not a… — Carl Sagan Copy Share Image
“Once we lose our fear of being tiny, we find ourselves on the threshold of a vast and awesome Universe which dwarfs… — Carl Sagan Copy Share Image
“Huygens was, of course, a citizen of his time. Who of us is not? He claimed science as his religion and then… — Carl Sagan Copy Share Image
“Kepler’s second law: A planet sweeps out equal areas in equal times. It takes as long to travel from B to A… — Carl Sagan Copy Share Image
Because men, compared to male chimps, have such relatively small testicles (large testicles indicate a species where many males mate, one after… — Carl Sagan Copy Share Image
We are at a crossroads in human history. Never before has there been a moment so simultaneously perilous and promising. We are… — Carl Sagan Copy Share Image
Accommodation to change, the thoughtful pursuit of alternative futures are keys to the survival of civilization and perhaps of the human species. — Carl Sagan Copy Share Image
If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of… — Carl Sagan Copy Share Image
We are star stuff which has taken its destiny into its own hands. The loom of time and space works the most… — Carl Sagan Copy Share Image
“The immense distances to the stars and the galaxies mean that we see everything in space in the past, some as they… — Carl Sagan Copy Share Image
Writing is perhaps the greatest of human inventions, binding together people who never knew each other, citizens of distant epochs. Books break… — Carl Sagan Copy Share Image
In a lot of scientists, the ratio of wonder to skepticism declines in time. That may be connected with the fact that… — 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
