Carl Sagan

“A blade of grass is a commonplace on Earth; it would be a miracle on Mars. Our descendants on Mars will know the value of a patch of green. And if a blade of grass is priceless, what is the value of a human being?”


Carl Sagan, Pale Blue Dot: A Vision of the Human Future in Space
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Pale Blue Dot: A Vision of the Human Future in Space Pale Blue Dot: A Vision of the Human Future in Space by Carl Sagan
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