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.
CARL SAGANIf it can be destroyed by the truth, it deserves to be destroyed by the truth.
More Carl Sagan Quotes
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Imagination will often carry us to worlds that never were, but without it we go nowhere.
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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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All over the world there are enormous numbers of smart, even gifted, people who harbor a passion for science.
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All civilizations become either spacefaring or extinct.
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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 total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth.
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The notion that science and spirituality are somehow mutually exclusive does a disservice to both.
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The Earth is a very small stage in a vast cosmic arena.
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We are like butterflies who flutter for a day and think it is forever.
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We all have a thirst for wonder. It’s a deeply human quality. Science and religion are both bound up with it.
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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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Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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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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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.
CARL SAGAN







