幸运的是，志愿者们不是被自身利益而是被利他主义推动。
Fortunately, volunteers are not motivated by self-interest, but by altruism.
沙发冲浪者视自己为一个部落的成员；不像在酒吧里面邂逅的两个人，他们是在利他主义的前提下相遇。
Couch surfers tend to see themselves as part of a tribe; unlike two people hooking up at a bar, they meet under an altruistic premise.
然后我会讲对非亲人的利他主义。
我们能从一群蚂蚁身上得到同样的利他主义。
当代有关利他主义的讨论迅速转向生物进化的解释。
Contemporary discussions of altruism quickly turn to evolutionary explanations.
皮肯斯先生的盎然兴味并不单单是利他主义。
尽管如此，质疑利他主义还是很容易，即便它一目了然。
Still, doubting altruism is easy, even when it seems at first glance to be apparent.
但两种理论均未就我们对利他主义的一般理解加以解释。
But neither theory fully accounts for our ordinary understanding of altruism.
嬉皮士宣扬利他主义和神秘主义，诚实、喜悦与非暴力。
Hippies preach altruism and mysticism, honesty, joy and nonviolence.
这意味着利他主义基因的存在会比自私基因更普遍。
That means that altruistic genes would be more prevalent than selfish genes.
家长的利他主义反映了对子女的幸福，而非其收入本身的考量；
Parental altruism implies concern for children's welfare, rather than for children's incomes per se;
“利他主义很伟大，但我不是那么伟大的人”，卡诺说。
大脑成像显示，利他主义会刺激我们的大脑中的奖励中心。
Brain imaging reveals that it stimulates the reward centres of our brains.
我们常常觉得这些利他主义的行为是购买公众承认，捞取名声的花招。
We tend to regard such ACTS of altruism as calculated attempts to purchase public recognition.
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。
Despite its reputation for greed, American society continues to uphold the virtues of philanthropy and altruism.
如果艾滋病被攻克，这将归功于科学，行动主义和利他主义三者的结合。
If AIDS is defeated, it will be thanks to an alliance of science, activism and altruism.
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。
Pure altruism, we think, requires a person to sacrifice for another without consideration of personal gain.
平常的利他主义都是值得赞誉的；然而，这并不是穆勒的哲学结果或影响。
Such universal altruism may be meritorious; it is not, however, a doctrine or consequence of Mill's philosophy.
而对非人类的动物而言，这种移情作用和利他主义的道德相关性究竟何在呢？
But what exactly is the moral relevance of empathy and altruism in non-human animals?
根据新泽西州拉特·格斯大学的罗伯特·特里弗斯，纯粹的利他主义是个错误。
According to Robert Trivers of Rutgers University in New Jersey, pure altruism is a mistake.
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。
One reason people deny that altruism exists is that, looking inward, they doubt the purity of their own motives.
利他主义“指的的是杀死孩子的父母是为了减轻孩子的痛苦，”她说。
Altruism "refers to a parent who kills a child to relieve the suffering of the child," she told Tracy.
进化论中有一个尚待解决的神秘现象，就是为什么生物是利他主义的。
One of the big unsolved mysteries in evolutionary theory is why creatures are altruistic.
进化论起作用的是我们的基因，因此进化论能产生，有利他主义的动物。
So, evolution works at a level of the genes and because of that it could give rise to animals that are themselves altruistic.
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。
There are several other theories about altruism, but one of the more intriguing ones is that it's all relative.
尽管摩根深感公众责任之重大，但他肩扛下陷教堂之壮举，并非完全源于利他主义。
Though Morgan had a large sense of public duty, he had not shouldered the falling church out of pure altruism.
但是，这些行为符合不符合利他主义的科学定义呢？——不求回报，主动帮助他人。
But it's unclear whether these behaviors fit the scientific definition of altruism: spontaneously helping others with no expectation of a reward.
这星期，我儿子升入了中学，新老师的欢迎词同样强调了日本人的利他主义。
My son matriculated to middle school this month, and the teacher’s welcoming remarks also stressed the altruistic.
这星期，我儿子升入了中学，新老师的欢迎词同样强调了日本人的利他主义。
My son matriculated to middle school this month, and the teacher’s welcoming remarks also stressed the altruistic.
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