Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
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。
"Every saint has a past, and every sinner has a future."
读诗应当以心灵去感悟心灵,不能仅从字面意思去理解。
I'm not a bad guy, I'm just a guy who sometimes does bad things.