The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
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。
Credit market discrimination makes the poor pay higher interest.
Don't play a supporting role in someone else's dream; be the protagonist of your own life.