Extraordinary claims require extraordinary evidence.
quote by Carl Sagan
Added by Catalin Popescu
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You have to know the past to understand the present.
quote by Carl Sagan
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The Cosmos is all that is or ever was or ever will be.
quote by Carl Sagan
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Somewhere, something incredible is waiting to be known.
quote by Carl Sagan
Added by Lucian Velea
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Where we have strong emotions, we're liable to fool ourselves.
quote by Carl Sagan
Added by Lucian Velea
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Man is a transitional animal. He is not the climax of creation.
Carl Sagan in Cosmic Connection: An Extraterrestrial Perspective
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We are star stuff which has taken its destiny into its own hands.
quote by Carl Sagan
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The universe seems neither benign nor hostile, merely indifferent.
quote by Carl Sagan
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It pays to keep an open mind, but not so open your brains fall out.
quote by Carl Sagan
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Atoms are mainly empty space. Matter is composed chiefly of nothing.
quote by Carl Sagan
Added by Catalin Popescu
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