"Somewhere, something incredible is waiting to be known."
"The hole in the ozone layer is a kind of skywriting. At first it seemed to spell out our continuing complacency before a witch's brew of deadly perils. But perhaps it really tells of a newfound talent to work together to protect the global environment."
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Source: Carl Sagan (2011). “Demon-Haunted World: Science as a Candle in the Dark”, p.476, Ballantine Books
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