“Life is not merely persistent, as Jock puts it; life is explosive. The basic theorem of population mathematics to which there has never been found an exception is that population increases always, not merely up to the extent of the food supply, but beyond it, to the minimum diet that will sustain life—the ragged edge of starvation.”

— Robert A. Heinlein , book Farmer in the Sky

Source: Farmer in the Sky (1950), Chapter 18, “Pioneer Party” (p. 196)

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Robert A. Heinlein 557

American science fiction author 1907–1988

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Robert A. Heinlein 557

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