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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.
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.
Approximate author period: c. 1965 AD · modern
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- Author or tradition
- Carl Sagan
Attribution: attributed - Country attributed
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- Approximate author period: c. 1965 AD · modern
Approximate author-period anchor from life dates 1934 to 1996; Wikidata Q410, https://www.wikidata.org/wiki/Q410 (accessed 2026-10-08). Not a quotation composition date.
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Supplied reference C; CSV row 105792; supplied attribution, independently unverified
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