An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God.
CARL SAGANNature is unsentimental. Death is built in.
More Carl Sagan Quotes
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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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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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I consider it an extremely dangerous doctrine, because the more likely we are to assume that the solution comes from the outside, the less likely we are to solve our problems ourselves.
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One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.
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Not explaining science seems to me perverse. When you’re in love, you want to tell the world.
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Every star may be a sun to someone.
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Human beings have a demonstrated talent for self-deception when their emotions are stirred.
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The Earth is a very small stage in a vast cosmic arena.
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Extinction is the rule. Survival is the exception.
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People are not stupid. They believe things for reasons.
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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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Somewhere, something incredible is waiting to be known.
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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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Across the sea of space, the stars are other suns.
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Nature is always more subtle, more intricate, more elegant than what we are able to imagine.
CARL SAGAN