There is perhaps no better a demonstration of the folly of human conceits than this distant image of our tiny world. — Carl Sagan Copy Share Image
“Long ago, when an early galaxy began to pour light out into the surrounding darkness, no witness could have known that billions… — Carl Sagan Copy Share Image
I set before you two ways: You can use your technology to destroy yourselves or to carry you to the planets and… — Carl Sagan Copy Share Image
“The Earth is the only world known so far to harbour life. There is nowhere else, at least in the near future,… — Carl Sagan Copy Share Image
Which aspects of our nature will prevail is uncertain, particularly when our visions and prospects are bound to one small part of… — Carl Sagan Copy Share Image
I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or… — Carl Sagan Copy Share Image
“The others would then fall silent and she would continue about doped gallium arsenide detectors, or the ethanol content of the galactic… — Carl Sagan Copy Share Image
“Contemplated as one grand whole, astronomy is the most beautiful monument of the human mind; the noblest record of its intelligence.” — Carl Sagan Copy Share Image
We are made of star stuff. For the most part, atoms heavier than hydrogen were created in the interiors of stars and… — Carl Sagan Copy Share Image
“The earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those… — Carl Sagan Copy Share Image
“The Apollo pictures of the whole Earth conveyed to multitudes something well known to astronomers: On the scale of the worlds -… — Carl Sagan Copy Share Image
“Observation: there was absolutely nothing to see on Venus. Conclusion: it must be covered with life.” — Carl Sagan Copy Share Image
Even these stars, which seem so numerous, are as sand, as dust - or less than dust - in the enormity of… — Carl Sagan Copy Share Image
Every aspect of Nature reveals a deep mystery and touches our sense of wonder and awe. Those afraid of the universe as… — Carl Sagan Copy Share Image
What a marvelous cooperative arrangement - plants and animals each inhaling each other's exhalations, a kind of planet-wide mutual mouth-to-stoma resuscitation, the… — Carl Sagan Copy Share Image
Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores… — Carl Sagan Copy Share Image
“universe is almost incompatible with life—or at least what we understand as necessary for life: Even if every star in a hundred… — Carl Sagan Copy Share Image
It will not be we who reach Alpha Centauri, and the other nearby stars. It will be a species very like us… — Carl Sagan Copy Share Image
“Billions of years from now our sun, then a distended red giant star, will have reduced Earth to a charred cinder. But… — Carl Sagan Copy Share Image
There are in fact 100 billion galaxies, each of which contain something like a 100 billion stars. Think of how many stars,… — Carl Sagan Copy Share Image
The vast distances that separate the stars are providential. Beings and worlds are quarantined from one another. The quarantine is lifted only… — 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
