形式验证的挑战在于弥合抽象模型与实际实现之间的差距。
The best thing about being a writer is that you get to live in the world you create.
Every setback is a setup for a comeback.
O homem superior é aquele que cumpre o seu dever, sem se preocupar com o resultado.
解释：天道远离人间，人道则存在于身边的社会人事之中，可以就近掌握。对于人所难及的事物，如何能知道呢？
爱不仅是一种情感，它也是一门艺术。
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.