抽象的目的不是模糊，而是创建一个新的语义层次，在这个层次上可以绝对精确。
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
解释：辅与车互相依存，嘴唇没有了，牙齿就要受寒。
The stock market is full of opportunities, but you have to be patient to find them.
【释义】如今官府在正税之外的苛捐杂税，比正税还要多出一倍，百姓怎么承受得了？
政策规则优于自由裁量，因为它们避免了时间不一致性问题。