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.
所以同一性可以促发利他行为。
我们能从一群蚂蚁身上得到同样的利他主义。
如果产品满足了需求，那么它就不是利他的。
有机体可能是利他主 义的；基因则是自私的。
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.
猫儿不像狗或是大象那样具有利他的，移情的行为。
Cats, unlike dogs or even elephants, aren't associated with altruistic, empathic behavior.
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.
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.
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.
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;
与此同时，其他一些表面上看来的利他主义行为往往也仅仅是互惠。
Meanwhile, other ACTS of seeming altruism are often just reciprocity.
这并非只是利他之举：更绿色的引擎会使用更少的燃料以增加利润率。
It is not just altruism: greener engines also use less fuel, so boost profit margins.
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.
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.
由于利他主义是捐肾者唯一的动机，也就难怪没有足够多的人来捐献了。
Unsurprisingly, with altruism the only incentive, not enough people offer.
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.
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?
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。
Chimpanzees even appear capable of altruism, being willing to help strangers in the absence of anticipated reward.
注意力不足过动症常常用兴奋剂(利他林)来治疗，同时伴以行为疗法。
ADHD is often partly treated with a stimulant (Ritalin), along with behaviour therapy.
Renegade：那么，Bruce，看起来您看到了它的某种利他部分。
Renegade: so, Bruce, it seems as though you see a sort of altruistic component to it.
当我们问为什么人类会有利他主义行为时，我们想知道的是他们的动机或意图。
When we ask whether human beings are altruistic, we want to know about their motives or intentions.
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.
最利他的行为，就是为他人牺牲自己，这也可以用毫无人情味的进化论来解释。
The most altruistic behavior of all, giving your life to help another, can be explained in cold-blooded evolutionary terms.
最利他的行为，就是为他人牺牲自己，这也可以用毫无人情味的进化论来解释。
The most altruistic behavior of all, giving your life to help another, can be explained in cold-blooded evolutionary terms.
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