A galaxy is composed of gas and dust and stars – billions upon billions of stars. Every star may be a sun to someone.
CARL SAGANNature is unsentimental. Death is built in.
More Carl Sagan Quotes
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Books permit us to voyage through time, to tap the wisdom of our ancestors.
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The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.
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If it can be destroyed by the truth, it deserves to be destroyed by the truth.
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For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.
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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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Across the sea of space, the stars are other suns.
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Except in pure mathematics, nothing is known for certain (although much is certainly false).
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One of the greatest gifts adults can give – to their offspring and to their society – is to read to children.
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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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If we ruin the earth, there is no place else to go.
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Every star may be a sun to someone.
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Science is not only compatible with spirituality; it is a profound source of spirituality.
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The cure for a fallacious argument is a better argument, not the suppression of ideas.
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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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We are a way for the cosmos to know itself.
CARL SAGAN







