One of the great commandments of science is: Mistrust arguments from authority.
CARL SAGANExtraordinary claims require extraordinary evidence.
More Carl Sagan Quotes
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The only thing we’ve found that makes the emptiness bearable, is each other.
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We live in a vast and awesome universe in which, daily, suns are made and worlds destroyed, where humanity clings to an obscure clod of rock.
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Understanding is a kind of ecstasy.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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Imagination will often carry us to worlds that never were, but without it we go nowhere.
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Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.
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You are worth about 3 dollars worth in chemicals.
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Your god is too small for my universe.
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We can’t help it. Life looks for life.
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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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One of the greatest gifts adults can give – to their offspring and to their society – is to read to children.
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The universe seems neither benign nor hostile, merely indifferent.
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There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
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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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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.
CARL SAGAN