"Somewhere, something incredible is waiting to be known."
"Perhaps, in retrospect, there would be little motivation even for malevolent extraterrestrials to attack the Earth; perhaps, after a preliminary survey, they might decide it is more expedient just to be patient for a little while and wait for us to self-destruct."
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Source: Carl Sagan (2011). “Billions & Billions: Thoughts on Life and Death at the Brink of the Millennium”, p.169, Ballantine Books
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