We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
CARL SAGANThere are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
More Carl Sagan Quotes
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Extraordinary claims require extraordinary evidence.
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Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.
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You have to know the past to understand the present.
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There are no forbidden questions in science, no matters too sensitive or delicate to be probed, no sacred truths.
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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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Writing is the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another.
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Science is not only compatible with spirituality; it is a profound source of spirituality.
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Any faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.
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Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact.
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If it can be destroyed by the truth, it deserves to be destroyed by the truth.
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To live in the hearts we leave behind is to live forever.
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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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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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The visions we offer our children shape the future.
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Advances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.
CARL SAGAN







