If you aren't in over your head, how do you know how tall you are?
如果你没有深陷其中，你怎么知道自己有多高？
The spirit of envy can destroy; it can never build.
仓库里没有积蓄备用的粮食，一旦遇到饥荒之年，就很难应付了。
最强大的人是能够承认自己弱点的人。
People always feel happier when approaching happiness but become anxious when happiness is ongoing.
Always plan for the worst-case scenario.