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
I believe our future depends powerfully on how well we understand this cosmos in which we float, like a mote of dust… — Carl Sagan Copy Share Image
When we look up at night and view the stars, everything we see is shinning because of distant nuclear fusion. — Carl Sagan Copy Share Image
“We have examined the universe in space and seen that we live on a mote of dust circling a humdrum star in… — 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
In the vastness of the Cosmos there must be other civilizations far older and more advanced than ours. — Carl Sagan Copy Share Image
The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars. — 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
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
The immense distances to the stars and the galaxies mean that we see everything ins pace int he past, some as they… — Carl Sagan Copy Share Image
For all our conceits about being the center of the universe, we live in a routine planet of a humdrum star stuck… — Carl Sagan Copy Share Image
I'd like the [Cosmos] series to be so visually stimulating that somebody who isn't even interested in the concepts will just watch… — Carl Sagan Copy Share Image
“There is a place with four suns in the sky-red, white, blue, and yellow; two of them are so close together that… — 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
The lifetime of a human being is measured by decades, the lifetime of the Sun is a hundred million times longer. Compared… — 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
“We inhabit a universe where atoms are made in the centers of stars; where each second a thousand suns are born; where… — Carl Sagan Copy Share Image
I went to the librarian and asked for a book about stars… And the answer was stunning. It was that the Sun… — Carl Sagan Copy Share Image
“We have examined the universe in space and seen that we live on a mote of dust circling a humdrum star in… — 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
“I find these comparisons particularly poignant: life versus death, hope versus fear. Space exploration and the highly mechanized destruction of people use… — Carl Sagan Copy Share Image
“The Cosmos may be densely populated with intelligent beings. But the Darwinian lesson is clear: There will be no humans elsewhere. Only… — Carl Sagan Copy Share Image
I never said it. Honest. Oh, I said there are maybe 100 billion galaxies and 10 billion trillion stars. It's hard to… — 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 know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars… — Carl Sagan Copy Share Image
“Cosmos is a Greek word for the order of the universe. It is, in a way, the opposite of Chaos.” — 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 desire to be connected with the cosmos reflects a profound reality, but we are connected; not in the trivial ways that… — 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… — Carl Sagan Copy Share Image
“There are some hundred billion (1011) galaxies, each with, on the average, a hundred billion stars.” — Carl Sagan Copy Share Image
We are made of stellar ash. Our origin and evolution have been tied to distant cosmic events. The exploration of the cosmos… — Carl Sagan Copy Share Image
“The cosmos is within us. We are made of star-stuff. We are a way for the universe to know itself.” — 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
Each of us is a tiny being, permitted to ride on the outermost skin of one of the smaller planets for a… — Carl Sagan Copy Share Image
“Sagan is an astronomer with one eye on the stars, another on history, and a third—his mind’s—on the human condition.…” — Carl Sagan Copy Share Image
It's been said that astronomy is a humbling and, I might add, a character-building experience. — 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
We are the representatives of the cosmos; we are an example of what hydrogen atoms can do, given 15 billion years of… — 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
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
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