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。
Mathematics is not a spectator sport. You have to do it to understand it.
领导力在于因为你的存在而使他人变得更好,并确保在你不在时这种影响依然存在。