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.
CARL SAGANWe 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.
More Carl Sagan Quotes
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If we ruin the earth, there is no place else to go.
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The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.
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Science is not only compatible with spirituality; it is a profound source of spirituality.
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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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Nature is unsentimental. Death is built in.
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We are like butterflies who flutter for a day and think it is forever.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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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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The truth may be puzzling. It may take some work to grapple with. It may be counterintuitive. It may contradict deeply held prejudices. It may not be consonant with what we desperately want to be true. But our preferences do not determine what’s true.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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The Earth is a very small stage in a vast cosmic arena.
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Don’t judge everyone else by your own limited experience.
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Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.
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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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All civilizations become either spacefaring or extinct.
CARL SAGAN