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All Quotes by author - Carl Sagan
" Absence of evidence is not evidence of absence. "
Evidence
Absence
" A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism. "
Good Idea
Clergy
Idea
" All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year. Not all bits have equal value. "
Value
American
Technology
" 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. "
Columbus
Brothers
Clown
" 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. "
Stars
Space
Seem
" Extinction is the rule. Survival is the exception. "
Exception
Rule
Extinction
" For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring. "
Far
Universe
Better
" For small creatures such as we the vastness is bearable only through love. "
Only
Small
Through
" I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students. "
Science
Education
School
" 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. "
Night
Know
I Can
" 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? "
Stars
Universe
Science
" If you wish to make an apple pie from scratch, you must first invent the universe. "
You
Pie
Wish
" Imagination will often carry us to worlds that never were. But without it we go nowhere. "
Go
Will
Never
" 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. "
Will
Up
Save
" It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring. "
Space
Better
Delusion
" It's been said that astronomy is a humbling and, I might add, a character-building experience. "
Add
Said
Experience
" I've written a number of books that have to do with the evolution of humans, human intelligence, human emotions. "
Human
Intelligence
Evolution
" Most of the people that I deal with are human. So I've had a lot of experience with that. "
Deal
Experience
Most
" 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. "
World
Home
Solar
" 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. "
Light
Great
Dark
" Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. "
How
Minds
Awake
" 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. "
Death
History
Learning
" Science is a way of thinking much more than it is a body of knowledge. "
Thinking
Way
Science
" Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense. "
Deep
Which
Religion
" The boundary between space and the earth is purely arbitrary. And I'll probably always be interested in this planet - it's my favorite. "
Planet
Favorite
Earth
" The brain is like a muscle. When it is in use we feel very good. Understanding is joyous. "
Brain
Understanding
Intelligence
" 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. "
New
Way
Thinking
" The Earth is a very small stage in a vast cosmic arena. "
Cosmic
Small
Stage
" 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? "
Nuclear Weapons
You
Side
" 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. "
Direction
Black
Darkness
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