古代学者在内心涵养上下功夫，所以表现在外表上便是德高望重的标志；今天的学者在外表上下功夫，对于内心涵养，则显出实际德行的缺陷。

Protecting the rights and interests of financial consumers is an important part of financial work.

We must be free not because we claim freedom, but because we practice it.

Life is like a song, with highs and lows.

数学不仅仅是一系列抽象概念的集合，而是一种让我们理解宇宙的语言。