Tratado metódico y practico de Materia
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When we thus contemplate the process of social hygiene, we are no longer in danger of looking upon it as an artificial interference with Nature. It is in the Book of Nature, as Campanella put it, that the laws of life and of government are to be read. Or, as Quesnel said two centuries ago, more precisely for our present purpose, "Nature is universal hygiene." All animals are scrupulous in hygiene; the elaboration of hygiene moves pari passu with the rank of a species in intelligence. Even the cockroach, which lives on what we call filth, spends the greater part of its time in the...
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