Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.
CARL SAGANWriting is the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another.
More Carl Sagan Quotes
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The universe seems neither benign nor hostile, merely indifferent.
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If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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A galaxy is composed of gas and dust and stars – billions upon billions of stars. Every star may be a sun to someone.
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The absence of evidence is not evidence of absence.
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Extraordinary claims require extraordinary evidence.
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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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Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.
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If it can be destroyed by the truth, it deserves to be destroyed by the truth.
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The only thing we’ve found that makes the emptiness bearable, is each other.
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Stars are phoenixes, rising from their own ashes.
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Better the hard truth, I say, than the comforting fantasy.
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A book is made from a tree. It is an assemblage of flat, flexible parts (still called “leaves”) imprinted with dark pigmented squiggles.
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If we ruin the earth, there is no place else to go.
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The visions we offer our children shape the future.
CARL SAGAN