Carl Sagan Quotes, Stars Quotes, Pieces Quotes

We are made of star-stuff. Our bodies are made of star-stuff. There are pieces of star within us all.

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The sacred truth of science is that there are no sacred truths.

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Anything else you're interested in is not going to happen if you can't breathe the air and drink the water. Don't sit this one out. Do something. You are by accident of fate alive at an absolutely critical moment in the history of our planet.

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Tags : Carl Sagan Quotes , Fate Quotes , Rivers Quotes

Ask courageous questions. Do not be satisfied with superficial answers. Be open to wonder and at the same time subject all claims to knowledge, without exception, to intense skeptical scrutiny. Be aware of human fallibility. Cherish your species and your planet.

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Advances in medicine and agriculture have saved vastly more lives than have been lost in all the wars in history.

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One of the great commandments of science is, 'Mistrust arguments from authority'. (Scientists, being primates, and thus given to dominance hierarchies, of course do not always follow this commandment.)

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Tags : Carl Sagan Quotes , Hierarchy Quotes , Dominance Quotes

Those afraid of the universe as it really is, those who pretend to nonexistent knowledge and envision a Cosmos centered on human beings will prefer the fleeting comforts of superstition.

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The fact that so little of the findings of modern science is prefigured in Scripture to my mind casts further doubt on it divine inspiration.

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Cutting off fundamental, curiosity-driven science is like eating the seed corn. We may have a little more to eat next winter but what will we plant so we and our children will have enough to get through the winters to come?

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Stars are phoenixes, rising from their own ashes.

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[N]o scientist likes to be criticized. ... But you don't reply to critics: "Wait a minute, wait a minute; this is a really good idea. I'm very fond of it. It's done you no harm. Please don't attack it." That's not the way it goes. The hard but just rule is that if the ideas don't work, you must throw them away. Don't waste any neurons on what doesn't work. Devote those neurons to new ideas that better explain the data. Valid criticism is doing you a favor.

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Tags : Carl Sagan Quotes , Science Quotes , Data Quotes

If I finish a book a week, I will read only a few thousand books in my lifetime, about a tenth of a percent of the contents of the greatest libraries of our time. The trick is to know which books to read.

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Tags : Carl Sagan Quotes , Book Quotes , Library Quotes

All of the rocky and metallic material we stand on, the iron in our blood, the calcium in our teeth, the carbon in our genes were produced billions of years ago in the interior of a red giant star. We are made of star stuff.

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The politicians and the religious leaders and the weapons scientists have been at it for a long time and they've made a thorough mess of it. I mean, we're in deep trouble.

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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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If you wish to make an apple pie from scratch, you must first invent the universe.

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There is perhaps no better a demonstration of the folly of human conceits than this distant image of our tiny world.

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Tags : Carl Sagan Quotes , Space Quotes , Earth Day Quotes

Imagination will often carry us to worlds that never were. But without it we go nowhere.

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In the vastness of space and the immensity of time, it is my joy to share a planet and an epoch with Annie.

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What is called for is an exquisite balance between two conflicting needs: the most skeptical scrutiny of all hypotheses that are served up to us and at the same time a great openness to new ideas. If you are only skeptical, then no new ideas make it through to you. On the other hand, if you are open to the point of gullibility and have not an ounce of skeptical sense in you, then you cannot distinguish useful ideas from the worthless ones.

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Tags : Carl Sagan Quotes , Hands Quotes , Ideas Quotes