管理复杂性的关键在于关注组件之间的接口，而不是它们的实现。
No man really knows about other human beings. The best he can do is to suppose that they are like himself.
译文：想要做成一件事情，首要的是做到足够自信，想要战胜他人必定先要战胜自己。赏析：做任何事前，我们的心态很重要，首先要有自信。人要失去自信，做事就缺乏必胜的勇气。一件事最难的不是事情本身，而是我们的内心是否够强大。
A good system design is one that makes it easy to do the right thing and hard to do the wrong thing.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."