"We are each of us like our little blue planet, hung in black space, upheld by nothing but our mutual reassurances, our loving lies."

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What a splendid perspective contact with a profoundly different civilization might provide! In a cosmic setting vast and old beyond ordinary human understanding we are a little lonely, and we ponder the ultimate significance, if any, of our tiny but exquisite blue planet, the Earth.... In the deepest sense the search for extraterrestrial intelligence is a search for ourselves.

— Carl Sagan