生命中最美丽的东西不是事物，而是瞬间。

Reflection on the past is the source of wisdom for the future.

It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

The best revenge is just moving on and getting over it.

函数是一种对应规则，通过它当给定任何东西（作为参数）时，可以获得另一个东西（该参数的函数值）。

"A book is a conversation between the author and the reader."

君子的学习，一定要喜欢提问。提问和学习是相辅相成的。不学习就无法产生疑问，不提问就无法扩展知识。