1·Despite its reputation for greed, American society continues to uphold the virtues of philanthropy and altruism.
尽管美国社会有贪婪的名声，但人家仍继续维持慈善和利他主义的美德。
2·Altruism is another big draw to the company garden.
利他主义是公司菜园的另一大收获。
3·One reason people deny that altruism exists is that, looking inward, they doubt the purity of their own motives.
人们否认利他主义存在的一个原因是，在自省时，他们质疑自己动机的纯洁性。
4·This has led biologists to conclude that altruism is a part of human nature.What they cannot decide is how or why it evolved.
这使得生物学家得出这样的结论：利他主义是人类本性的一部分，然而他们不能决定这种本性是怎样形成和样演变的。
5·There's also a less flattering reason: denying the possibility of pure altruism provides a convenient excuse for selfish behavior.
还有一种不那么“光鲜”的原因：否定纯粹利他主义的可能性可为自私行为提供方便的借口。
1·There are several other theories about altruism, but one of the more intriguing ones is that it's all relative.
关于利他主义还有别的一些理论，但最有意思的一种认为这一切都是有亲缘关系的。
2·But he acknowledges it is not pure altruism.
但他承认，这并非基于纯粹的利他主义。
3·Pure altruism, we think, requires a person to sacrifice for another without consideration of personal gain.
我们认为，纯粹的利他主义要求一个人不计个人得失为另一个人作出牺牲。
4·Chimpanzees even appear capable of altruism, being willing to help strangers in the absence of anticipated reward.
黑猩猩们还表现出利他主义精神，很愿意帮助陌生人，即使没有预期的奖励。
5·I can't help feeling that we believe in the altruism thesis so strongly because it feels like the way the world should work.
我不禁感到，我们之所以如此坚信利他主义的命题，是因为我们觉得世界本该如此运转。