解释：君子有三件值得可惜的事：一辈子不学习，是第一件可惜的事；一天无所事事，是第二件可惜的事；一个人的名声败坏，是第三件可惜的事。

Your self-worth is determined by you. You don't have to depend on someone telling you who you are.

There are some things so serious you have to laugh at them.

坚毅的人把成就视为马拉松；他或她的优势是耐力。

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。