The strength of altruism lies in the fact that altruistic acts undeniably occur in any society and that moral codes universally advocate altruism or benevolence and condemn selfishness.

• 毫无疑问；利他主义存在于任何社会；而且道德准也普遍提倡利他主义或善良行为；而谴责自私自利.；这也正是利他主义具有强大生命力的原因