The Dawn of Civilization · Evolution of Culture

68:6.7

All down through the ages the standards of living have determined the quality of a surviving population in contrast with mere quantity. Local class standards of living give origin to new social castes, new mores. When standards of living become too complicated or too highly luxurious, they speedily become suicidal. Caste is the direct result of the high social pressure of keen competition produced by dense populations.

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