The mind is divided into parts that sometimes conflict. Like a rider on the back of an elephant, the conscious, reasoning part of the mind has only limited control over the automatic, emotional part.

个人的行为并非以社会福利最大化为目标。

不要施小恩惠而伤害整体，更不可以公济私。以常情宽恕别人，以道理约束自己。