We start out a million years ago in a small community on some grassy plain; we hunt animals, have children, and develop… — Carl Sagan Copy Share Image
All of the rocky and metallic material we stand on, the iron in our blood, the calcium in our teeth, the carbon… — Carl Sagan Copy Share Image
Eratosthenes's only tools were sticks, eyes, feet, and brains; plus a zest for experiment. With those tools he correctly deduced the circumference… — Carl Sagan Copy Share Image
“Our Sun is a second- or third-generation star. All of the rocky and metallic material we stand on, the iron in our… — 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
“600 million years ago, the monopolizing grip of the algae was broken and an enormous proliferation of new lifeforms emerged, an event… — 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
“For thousands of years humans were oppressed— as some of us still are— by the notion that the universe is a marionette… — Carl Sagan Copy Share Image
“When an object impacts the Moon at high speed, it sets the Moon slightly wobbling. Eventually the vibrations die down but not… — Carl Sagan Copy Share Image
“Planetary exploration satisfies our inclination for great enterprises and wanderings and quests that has been with us since our days as hunters… — 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
![“[ 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)
