translation.en: We can understand this process by understanding a little bit about emotions in general. So the basic human emotions, those kinds of emotions that we share with all other human beings, exist because they motivate us to do good things and they keep us away from doing bad things.
translation.zh: 要理解这个过程，我们得先了解一点 关于情感的小知识。人类的基本情感， 那些我们和所有其他人类都共有的情感， 之所以存在，是因为它们激励我们做好事， 防止我们做坏事。