你送给我桃子，我就回报给你李子。意思是做人要知恩图报，不能忘恩负义。也比喻礼尚往来，相互赠送礼物。

没有人能在相当长的时间里，对自己戴一副面具，对众人戴另一副面具，而最终不困惑于哪一副才是真实的。

"The world breaks everyone, and afterward, many are strong at the broken places."

You’ve got to have models in your head. And you’ve got to array your experience—both vicarious and direct—on this latticework of models. You may have noticed students who just try to remember and pound back what is remembered. Well, they fail in school and in life. You’ve got to hang experience on a latticework of models in your mind.