Every type of animal knows how to get for itself and take away that which some fellow being has, but only the more highly evolved entities find pleasure in giving.

任何动物都知道为己所取，夺人所爱。只有高级进化物种才以付出为乐。

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What can man, the most highly evolved species of animal life, learn from less developed creatures ?

人类，作为动物群中进化得最高级的物种，能向较为低级的动物学到些说明呢？

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