文化的功能观点坚持这样的原则：在每一种文明类型中，每一种习俗、物质对象、观念和信仰都履行某种重要功能，完成某些任务，代表一个运作整体中不可或缺的部分。

Quality is never an accident; it is always the result of intelligent effort.

If you can't understand why someone is doing something, look at the consequences of their actions, whatever they might be, and then infer the motivations from their consequences.

Each generation takes the earth as trustees.