“Or perhaps they are here, but in hiding because of some Lex Galactica , some ethic of noninterference with emerging civilizations. We… — Carl Sagan Copy Share Image
National boundaries are not evident when we view the Earth from space. Fanatical ethnic or religious or national chauvinisms are a little… — Carl Sagan Copy Share Image
Perhaps, in retrospect, there would be little motivation even for malevolent extraterrestrials to attack the Earth; perhaps, after a preliminary survey, they… — Carl Sagan Copy Share Image
We have heard the rationales offered by the nuclear superpowers. We know who speaks for the nations. But who speaks for the… — Carl Sagan Copy Share Image
These days there seems to be nowhere left to explore, at least on the land area of the Earth. Victims of their… — Carl Sagan Copy Share Image
“It has been said that astronomy is a humbling and character-building experience. There is perhaps no better demonstration of the folly of… — Carl Sagan Copy Share Image
There is no other species on Earth that does science. It is, so far, entirely a human invention, evolved by natural selection… — Carl Sagan Copy Share Image
“One consequence of this train of argument is that, even if civilizations commonly arise on planets throughout the Galaxy, few of them… — Carl Sagan Copy Share Image
At a few hundred kilometers altitude, the Earth fills half your sky, and the band of blue that stretches from Mindanao to… — 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
An extraterrestrial being, newly arrived on Earth - scrutinizing what we mainly present to our children in television, radio, movies, newspapers, magazines,… — 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
“It is pointless to worry about the possible malevolent intentions of an advanced civilization with whom we might make contact. It is… — Carl Sagan Copy Share Image
“The Cosmos extends, for all practical purposes, forever. After a brief sedentary hiatus, we are resuming our ancient nomadic way of life.… — Carl Sagan Copy Share Image
The Hindu religion is the only one of the world’s great faiths dedicated to the idea that the Cosmos itself undergoes an… — Carl Sagan Copy Share Image
The Earth is a place. It is by no means the only place. It is not even a typical place. — Carl Sagan Copy Share Image
After the earth dies, some 5 billion years from now, after it's burned to a crisp, or even swallowed by the Sun,… — 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
The cosmic calendar compresses the local history of the universe into a single year. If the universe began on January 1st it… — 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 major religions on the Earth contradict each other left and right. You can't all be correct. And what if all of… — Carl Sagan Copy Share Image
When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never… — Carl Sagan Copy Share Image
“Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever… — 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
