When you realize that no one really knows what they are doing and that everyone is doing the best they can according… — Carl Sagan Copy Share Image
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
Has there ever been a religion with the prophetic accuracy and reliability of science? . . . No other human institution comes close. — Carl Sagan Copy Share Image
An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God.… — Carl Sagan Copy Share Image
Some racists still reject the plain testimony written in the DNA that all the races are not only human but nearly indistinguishable. . . . — Carl Sagan Copy Share Image
“Why is the half of humanity with a special sensitivity to the preciousness of life, the half untainted by testosterone poisoning, almost… — Carl Sagan Copy Share Image
We humans look rather different from a tree. Without a doubt we perceive the world differently than a tree does. But down… — Carl Sagan Copy Share Image
The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together. — Carl Sagan Copy Share Image
Be grateful everyday for the brief but magnificent opportunity that life provides. — Carl Sagan Copy Share Image
“If you want to save your child from polio, you can pray or you can inoculate. ... Choose science.” — Carl Sagan Copy Share Image
“I'm frequently asked, "Do you believe there's extraterrestrial intelligence?" I give the standard arguments- there are a lot of places out there,… — 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
If some good evidence for life after death were announced, I'd be eager to examine it; but it would have to be… — Carl Sagan Copy Share Image
“The nature of life on Earth and the search for life elsewhere are two sides of the same question—the search for who… — Carl Sagan Copy Share Image
“We succeeded in taking that picture from [deep space], and, if you look at it, you see a dot. That's here. That's… — Carl Sagan Copy Share Image
The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.… — Carl Sagan Copy Share Image
Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about… — 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
“From this distant vantage point, the Earth might not seem of particular interest. But for us, it's different. Consider again that dot.… — Carl Sagan Copy Share Image
“Nietzsche mourns the loss of “man’s belief in his dignity, his uniqueness, his irreplace-ability in the scheme of existence.” For me, it… — Carl Sagan Copy Share Image
We are rare and precious because we are alive, because we can think as well as we can. We are privileged to… — Carl Sagan Copy Share Image
“There is something stunningly narrow about how the Anthropic Principle is phrased. Yes, only certain laws and constants of nature are consistent… — 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 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
