管理复杂性的关键在于关注组件之间的接口，而不是它们的内部细节。
人无国王、庶民之分，只要家有和平，便是最幸福的人。
The study of mathematics is the indispensable basis for all intellectual and spiritual progress.
"Don’t try to make life a mathematics problem with yourself in the center and everything coming out equal. When you’re good, bad things can still happen. And if you’re bad, you can still be lucky."
