我们为新南开所抱的志愿，不过是‘了解中国，服务中国’这两句话。

数学不是一项观赏性运动。

天下是人民为主，君主只是客人

A good algorithm is like a sharp knife—it does exactly what it is supposed to do with a minimum of applied effort.

The greatest glory in living lies not in never falling, but in rising every time we fall.

语言是存在的家。