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" In our obscurity - in all this vastness - there is no hint that help will come from elsewhere to save us from ourselves. It is up to us. "
Carl Sagan
Will
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" We are the representatives of the cosmos; we are an example of what hydrogen atoms can do, given 15 billion years of cosmic evolution. "
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" Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people. "
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" The brain is like a muscle. When it is in use we feel very good. Understanding is joyous. "
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" Our posturings, our imagined self-importance, the delusion that we have some privileged position in the universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark. "
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" It's been said that astronomy is a humbling and, I might add, a character-building experience. "
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" I've written a number of books that have to do with the evolution of humans, human intelligence, human emotions. "
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" We start out a million years ago in a small community on some grassy plain; we hunt animals, have children, and develop a rich social, sexual, and intellectual life, but we know almost nothing about our surroundings. "
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" You probably don't need more weapons than what's required to destroy every city on earth. There's only 2,300 cities. So, the United States, by that criteria, only needs 2,300 nuclear weapons - well, we've got more than 25,000! "
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" We are not without empathetic terror when we open Pascal's 'Pensees' and read, 'I am the great silent spaces between worlds.' "
Carl Sagan
Without
Silent
Read
" I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star. "
Carl Sagan
Night
Know
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" The boundary between space and the earth is purely arbitrary. And I'll probably always be interested in this planet - it's my favorite. "
Carl Sagan
Planet
Favorite
Earth
" We hunger to understand, so we invent myths about how we imagine the world is constructed - and they're, of course, based upon what we know, which is ourselves and other animals. So we make up stories about how the world was hatched from a cosmic egg or created after the mating of cosmic deities or by some fiat of a powerful being. "
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" Absence of evidence is not evidence of absence. "
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Absence
" But the fact that some geniuses were laughed at does not imply that all who are laughed at are geniuses. They laughed at Columbus, they laughed at Fulton, they laughed at the Wright Brothers. But they also laughed at Bozo the Clown. "
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Columbus
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" Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense. "
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Deep
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" A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism. "
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" We've arranged a civilization in which most crucial elements profoundly depend on science and technology. "
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Science
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" The universe seems neither benign nor hostile, merely indifferent. "
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Nor
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" There is a wide, yawning black infinity. In every direction, the extension is endless; the sensation of depth is overwhelming. And the darkness is immortal. Where light exists, it is pure, blazing, fierce; but light exists almost nowhere, and the blackness itself is also pure and blazing and fierce. "
Carl Sagan
Direction
Black
Darkness
" Most of the people that I deal with are human. So I've had a lot of experience with that. "
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Deal
Experience
Most
" Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out. "
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" We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology. "
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Technology
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" When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it. "
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" If we long to believe that the stars rise and set for us, that we are the reason there is a Universe, does science do us a disservice in deflating our conceits? "
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Stars
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" I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students. "
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" If you wish to make an apple pie from scratch, you must first invent the universe. "
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You
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" The universe is not required to be in perfect harmony with human ambition. "
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" The dangers of not thinking clearly are much greater now than ever before. It's not that there's something new in our way of thinking - it's that credulous and confused thinking can be much more lethal in ways it was never before. "
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" The Earth is a very small stage in a vast cosmic arena. "
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" It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring. "
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Space
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