Carl Sagan - Since, in the long run, every planetary civilization will be...

Since, in the long run, every planetary civilization will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring--not because of exploratory or romantic zeal, but for the most practical reason imaginable: staying alive.. If our long-term survival is at stake, we have a basic responsibility to our species to venture to other worlds.

Carl Sagan

They Said So®

Carl Sagan Quotes

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Since, in the long run, every planetary civilization will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring--not because of exploratory or romantic zeal, but for the most practical reason imaginable: staying alive.. If our long-term survival is at stake, we have a basic responsibility to our species to venture to other worlds. Carl Sagan

They Said So®

Keywords

long run planetary civilization endangered impacts space surviving obliged spacefaring-- exploratory romantic zeal practical reason imaginable staying alive long-term survival stake basic responsibility species venture worlds

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