All civilizations become either spacefaring or extinct.
CARL SAGANWe make our world significant by the courage of our questions and the depth of our answers.
More Carl Sagan Quotes
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Extinction is the rule. Survival is the exception.
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Any faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.
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Nature is unsentimental. Death is built in.
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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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We are a way for the cosmos to know itself.
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Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.
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Where we have strong emotions, we’re liable to fool ourselves.
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Somewhere, something incredible is waiting to be known.
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Writing is the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another.
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One of the great commandments of science is: Mistrust arguments from authority.
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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 we continue to accumulate only power and not wisdom, we will surely destroy ourselves.
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Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.
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There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
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You are worth about 3 dollars worth in chemicals.
CARL SAGAN