“The total amount of energy from outside the solar system ever received by all the radio telescopes on the planet Earth is… — Carl Sagan Copy Share Image
“A handful of sand contains about 10,000 grains, more than the number of stars we can see with the naked eye on… — Carl Sagan Copy Share Image
“Would we argue that ten thousand target nuclear warheads are likely to enhance the prospect for our survival? What account would we… — 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
“Human history can be viewed as a slowly dawning awareness that we are members of a larger group. Initially our loyalties were… — Carl Sagan Copy Share Image
There is every reason to think that in the coming years Mars and its mysteries will become increasingly familiar to the inhabitants… — Carl Sagan Copy Share Image
Our posturings, our imagined self-importance , the delusion that we have some privileged position in the universe are challenged by this point… — 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
“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
The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the… — Carl Sagan Copy Share Image
We can make a similar examination, but with greater uncertainty, of the extraterrestrial hypothesis that holds that a wide range of UFOs… — Carl Sagan Copy Share Image
We've begun at last to wonder about our origins, star stuff contemplating the stars, organized collections of ten billion billion billion atoms… — Carl Sagan Copy Share Image
“Meanwhile the Cosmos is rich beyond measure: the total number of stars in the universe is greater than all the grains of… — 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
“Voyages to the outer solar system are controlled from a single place on the planet Earth, the Jet Propulsion Laboratory (JPL) of… — 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
