I'm with Tsiolkovsky: "A planet is the cradle of mind, but one cannot live in a ... | Hacker News

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troymc on March 15, 2012 | parent | context | favorite | on: Why Elon Musk Wants To Bring People to Mars—and Go...

I'm with Tsiolkovsky:

"A planet is the cradle of mind, but one cannot live in a cradle forever."

usually cited as "Earth is the cradle of humanity, but one cannot live in a cradle forever."

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