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" We've arranged a civilization in which most crucial elements profoundly depend on science and technology. "
Carl Sagan
Science
Most
Technology
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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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Destroy
Need
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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. "
Carl Sagan
Space
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" We're in very bad trouble if we don't understand the planet we're trying to save. "
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" For small creatures such as we the vastness is bearable only through love. "
Carl Sagan
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" Science is a way of thinking much more than it is a body of knowledge. "
Carl Sagan
Thinking
Way
Science
" 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. "
Carl Sagan
Death
History
Learning
" We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology. "
Carl Sagan
Technology
Live
Society
" No other planet in the solar system is a suitable home for human beings; it's this world or nothing. That's a very powerful perception. "
Carl Sagan
World
Home
Solar
" Even these stars, which seem so numerous, are as sand, as dust - or less than dust - in the enormity of the space in which there is nothing. "
Carl Sagan
Stars
Space
Seem
" 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. "
Carl Sagan
Lost
Live
People
" Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. "
Carl Sagan
How
Minds
Awake
" 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? "
Carl Sagan
Stars
Universe
Science
" I've written a number of books that have to do with the evolution of humans, human intelligence, human emotions. "
Carl Sagan
Human
Intelligence
Evolution
" 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
" 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
" Imagination will often carry us to worlds that never were. But without it we go nowhere. "
Carl Sagan
Go
Will
Never
" Most of the people that I deal with are human. So I've had a lot of experience with that. "
Carl Sagan
Deal
Experience
Most
" Extinction is the rule. Survival is the exception. "
Carl Sagan
Exception
Rule
Extinction
" We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces. "
Carl Sagan
Ignorance
Technology
Power
" We are the representatives of the cosmos; we are an example of what hydrogen atoms can do, given 15 billion years of cosmic evolution. "
Carl Sagan
Evolution
Atoms
Years
" I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students. "
Carl Sagan
Science
Education
School
" 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
Up
Save
" When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it. "
Carl Sagan
Yourself
You
Light
" 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
" The Earth is a very small stage in a vast cosmic arena. "
Carl Sagan
Cosmic
Small
Stage
" 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. "
Carl Sagan
Small
Children
Community
" It's been said that astronomy is a humbling and, I might add, a character-building experience. "
Carl Sagan
Add
Said
Experience
" The professed function of the nuclear weapons on each side is to prevent the other side from using their nuclear weapons. If that's all it is, then we've gotta as: how many nuclear weapons do you need to do that? "
Carl Sagan
Nuclear Weapons
You
Side
" 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. "
Carl Sagan
Light
Great
Dark
" 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. "
Carl Sagan
Animals
Hunger
Know