陌生人是群体本身的一个元素，与穷人和各种“内部敌人”并无不同——这个元素在群体中的成员身份既涉及在群体之外，也涉及与群体对立。
The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.
The most important part of teaching is to teach what it is to know.
天下人最能享受的是个“闲”字，但是闲适要从勤俭中得到。而天下最便宜的是个“勤”字，然而勤奋是从闲暇中做出。