无论他做什么，地球上的每个人在世界历史中都扮演着核心角色。而通常他并不知道这一点。
No matter what he does, every person on earth plays a central role in the history of the world. And normally he doesn't know it.
Every tear is a waterfall.
The most successful investors are those who can maintain a long-term perspective and avoid short-term distractions.
图书馆是活书的墓地，每一本都在等待读者将其复活。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.