The Earth is a very small stage in a vast cosmic arena.
CARL SAGANThe cure for a fallacious argument is a better argument, not the suppression of ideas.
More Carl Sagan Quotes
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We are all stardust.
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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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Be grateful everyday for the brief but magnificent opportunity that life provides.
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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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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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There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
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The significance of our lives and our fragile planet is then determined only by our own wisdom and courage.
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All civilizations become either spacefaring or extinct.
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If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.
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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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We make our world significant by the courage of our questions and the depth of our answers.
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Other things being equal, it is better to be smart than to be stupid.
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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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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If we ruin the earth, there is no place else to go.
CARL SAGAN