We are star stuff harvesting sunlight.
CARL SAGANThe universe is a pretty big place. If it’s just us, seems like an awful waste of space.
More Carl Sagan Quotes
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And you are made of a hundred trillion cells. We are, each of us, a multitude.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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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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People are not stupid. They believe things for reasons.
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You have to know the past to understand the present.
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Not all birds can fly. What separates the flyers from the walkers is the ability to take off.
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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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We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.
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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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If you wish to make an apple pie from scratch, you must first invent the universe.
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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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For small creatures such as we the vastness is bearable only through love.
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If we ruin the earth, there is no place else to go.
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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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Science is an attempt, largely successful, to understand the world, to get a grip on things, to get hold of ourselves, to steer a safe course.
CARL SAGAN