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.

成功的关键是失败……成功是由99%的失败组成的。

没有熟练的操作者，最先进的机械也毫无意义。