Man is at once the product and the prisoner of his genes. Civilizations flourish and decay, like dinosaurs, in obedience to irreversible genetic decrees. All the marvelous fruits of man's distinctive intelligence, of his ascent from the apes, owe their conception not to reason but to the unreasoning mandates of heredity. The human evolutionary course is determined by the microscopic chromosomes that constitute the only true inheritance passed from one generation to the next.
These provocative opinions appear in The Evolution of Man and Society (George Allen & Unwin, Ltd., London), the latest book by Cyril Dean Darlington, 65, a...
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