All civilizations become either spacefaring or extinct.
CARL SAGANWe are like butterflies who flutter for a day and think it is forever.
More Carl Sagan Quotes
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We are star stuff harvesting sunlight.
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The absence of evidence is not evidence of absence.
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There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
CARL SAGAN -
The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.
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The universe seems neither benign nor hostile, merely indifferent.
CARL SAGAN -
Somewhere, something incredible is waiting to be known.
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Nothing disturbs me more than the glorification of stupidity.
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Don’t judge everyone else by your own limited experience.
CARL SAGAN -
All over the world there are enormous numbers of smart, even gifted, people who harbor a passion for science.
CARL SAGAN -
You are worth about 3 dollars worth in chemicals.
CARL SAGAN -
Stars are phoenixes, rising from their own ashes.
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We are a way for the cosmos to know itself.
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Not all birds can fly. What separates the flyers from the walkers is the ability to take off.
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Writing is the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another.
CARL SAGAN -
The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be consonant with what we desperately want to be true. But our preferences do not determine what’s true.
CARL SAGAN







