You have to know the past to understand the present.
CARL SAGANWe can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.
More Carl Sagan Quotes
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The Earth is a very small stage in a vast cosmic arena.
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The Earth is the only world known so far to harbor life.
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Human beings have a demonstrated talent for self-deception when their emotions are stirred.
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Knowing a great deal is not the same as being smart; intelligence is not information alone but also judgement, the manner in which information is coordinated and used.
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When we look up at night and view the stars, everything we see is shinning because of distant nuclear fusion.
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Better the hard truth, I say, than the comforting fantasy.
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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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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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We are like butterflies who flutter for a day and think it is forever.
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Your god is too small for my universe.
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Advances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.
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You are worth about 3 dollars worth in chemicals.
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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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I would suggest that science is, at least in my part, informed worship.
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Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.
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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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Somewhere, something incredible is waiting to be known.
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The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together.
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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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We can’t help it. Life looks for life.
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Arguments from authority carry little weight, authorities have made mistakes in the past. They will do so again in the future. Perhaps a better way to say it is that in science there are no authorities; at most, there are experts.
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One of the great commandments of science is: Mistrust arguments from authority.
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The universe is not required to be in perfect harmony with human ambition.
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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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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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Every star may be a sun to someone.
CARL SAGAN