We are all stardust.
CARL SAGANThe absence of evidence is not evidence of absence.
More Carl Sagan Quotes
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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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Nature is unsentimental. Death is built in.
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Books break the shackles of time, proof that humans can work magic.
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The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of the Cosmos.
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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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For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
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Extraordinary claims require extraordinary evidence.
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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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What an astonishing thing a book is.
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We are star stuff harvesting sunlight.
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The cure for a fallacious argument is a better argument, not the suppression of ideas.
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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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Science is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course.
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I think the health of our civilization, the depth of our awareness about the underpinnings of our culture and our concern for the future can all be tested by how well we support our libraries.
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Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs.
CARL SAGAN