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Don't just fight in the North or the South. Always imagine every battle in your mind, where everyone is both your enemy and your friend, and all possible events happen simultaneously. That way, nothing will take you by surprise, and everything that happens will be something you've already imagined.

"The only way to get rid of a temptation is to yield to it."

過早的優化是萬惡之源。

數學證明是用邏輯語言寫成的詩。

天下沒有不能教化的人，就害怕不誠心；天下沒有不能干成的事，就怕立志不堅定。

We must have reverence when making products and be responsible to users.

All earthly existence must ultimately be contained in a book.