Wisdom is the natural enemy of the wise, and the fool speaks with his mouth, and the wise man speaks with his head, and the wise man speaks with his heart.
聪明是智慧者的天敌，傻瓜用嘴讲话，聪明的人用脑袋讲话，智慧的人用心讲话。
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The small number of living humans sampled by geneticists, Wolpoff says, and the effects of natural selection over the millennia, make it fool-hardy to say with assurance that Out of Africa is right.