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Communications of the ACM

ACM Opinion

Be Kind to Extraterrestrials

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Credit: Paul CampbellGetty Images

In his celebrated book On Walden Pond, Henry David Thoreau wrote: "We need the tonic of wildness.... At the same time that we are earnest to explore and learn all things, we require that all things be mysterious and unexplorable, that land and sea be indefinitely wild, unsurveyed and unfathomed by us because unfathomable. We can never have enough of nature."

From Scientific American
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