The Earth is the only world known so far to harbor life.
CARL SAGANAdvances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.
More Carl Sagan Quotes
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Nature is unsentimental. Death is built in.
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Imagination will often carry us to worlds that never were, but without it we go nowhere.
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Better the hard truth, I say, than the comforting fantasy.
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One of the great commandments of science is: Mistrust arguments from authority.
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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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The cure for a fallacious argument is a better argument, not the suppression of ideas.
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The price we pay for anticipation of the future is anxiety about it.
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We can’t help it. Life looks for life.
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Human beings have a demonstrated talent for self-deception when their emotions are stirred.
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All civilizations become either spacefaring or extinct.
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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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I don’t want to believe. I want to know.
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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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A book is made from a tree. It is an assemblage of flat, flexible parts (still called “leaves”) imprinted with dark pigmented squiggles.
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To live in the hearts we leave behind is to live forever.
CARL SAGAN