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.
The best farms are those where animals thrive, not just survive.
Life has taught me to think,but thinking has not taught me to live.
没有过去就没有未来。
领导力不是负责,而是关心你负责的人。