Imagination will often carry us to worlds that never were, but without it we go nowhere.
CARL SAGANAny faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.
More Carl Sagan Quotes
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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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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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If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.
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The only thing we’ve found that makes the emptiness bearable, is each other.
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If you wish to make an apple pie from scratch, you must first invent the universe.
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All civilizations become either spacefaring or extinct.
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One of the great commandments of science is: Mistrust arguments from authority.
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People are not stupid. They believe things for reasons.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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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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All over the world there are enormous numbers of smart, even gifted, people who harbor a passion for science.
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If it can be destroyed by the truth, it deserves to be destroyed by the truth.
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We are a way for the cosmos to know itself.
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The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of the Cosmos.
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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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The absence of evidence is not evidence of absence.
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What an astonishing thing a book is.
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We are all stardust.
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Stars are phoenixes, rising from their own ashes.
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One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.
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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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Any faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.
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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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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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I don’t want to believe. I want to know.
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Somewhere, something incredible is waiting to be known.
CARL SAGAN