Not all birds can fly. What separates the flyers from the walkers is the ability to take off.
CARL SAGANUnderstanding is a kind of ecstasy.
More Carl Sagan Quotes
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The universe seems neither benign nor hostile, merely indifferent.
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Perhaps the depth of love can be calibrated by the number of different selves that are actively involved in a given relationship.
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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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The Earth is a very small stage in a vast cosmic arena.
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All civilizations become either spacefaring or extinct.
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If we ruin the earth, there is no place else to go.
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We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
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Not explaining science seems to me perverse. When you’re in love, you want to tell the world.
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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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All over the world there are enormous numbers of smart, even gifted, people who harbor a passion for science.
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An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God.
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Somewhere, something incredible is waiting to be known.
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You have to know the past to understand the present.
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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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The price we pay for anticipation of the future is anxiety about it.
CARL SAGAN