Nature is unsentimental. Death is built in.
CARL SAGANAll civilizations become either spacefaring or extinct.
More Carl Sagan Quotes
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We are like butterflies who flutter for a day and think it is forever.
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You are worth about 3 dollars worth in chemicals.
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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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Human beings have a demonstrated talent for self-deception when their emotions are stirred.
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The price we pay for anticipation of the future is anxiety about it.
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The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.
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I don’t want to believe. I want to know.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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We make our world significant by the courage of our questions and the depth of our answers.
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Every star may be a sun to someone.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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Where we have strong emotions, we’re liable to fool ourselves.
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Your god is too small for my universe.
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We are star stuff which has taken its destiny into its own hands.
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The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth.
CARL SAGAN