If human evolution is to continue along the same lines as in the past, it will probably involve a still greater prolongation of childhood and retarda… - J.B.S. Haldane

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If human evolution is to continue along the same lines as in the past, it will probably involve a still greater prolongation of childhood and retardation of maturity. Some of the characters distinguishing adult man will be lost. It was not an embryologist or palaeontologist who said, "Except ye . . . become as little children, ye shall not enter into the kingdom of heaven."