活着就是受苦，生存就是在苦难中找到某种意义。
Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.
The only limits that exist are the ones in your mind.
The art of algorithm design is not just in solving problems, but in discovering new ways to think about them.
The goal is not just to design a market, but to design one that works well in practice.