数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
天下的治乱不在于一个王朝的兴亡，而在于百姓的忧乐。
"Silence can be louder than words, if you know how to listen."
Sun don't shine forever, but as long as it's here then we might as well shine together.