Watch your thoughts, for they become words. Watch your words, for they become actions. Watch your actions, for they become habits. Watch your habits, for they become your character. And watch your character, for it becomes your destiny. What we think, we become.

最终，爱才是最重要的。

最好的书是那些让你在读完时与开始时有些不同的书。

Mathematics is a language that allows us to describe the indescribable.