So what is it, then, that makes some choose selflessness, the need to devote themselves to something greater, while others know only self-interest, isolating themselves in a world of their own making?

那么，是什么让一些人选择了无私，选择投身于更伟大的事情，而又让其他人只关心一己私利，把自己隔绝在自己的小世界中呢？

youdao

So what is it, then, that makes some choose selflessness, they need to devote themselves to something greater, while others know only self-interest isolating themselves in a world of their own making?

那么又是什么使得有些人选择无私奉献，献身于更伟大的事业中，而其他人却只懂得自私自利地置身事外。

youdao