"Since, in the long run, every planetary civilization will be endangered by impacts from space, every surviving civilization is obliged to become space...

The vast distances that separate the stars are providential. Beings and worlds are quarantined from one another. The quarantine is lifted only for those with sufficient self-knowledge and judgment to have safely traveled from star to star.
The vast distances that separate the stars are providential. Beings and worlds are quarantined from ...
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