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 truth is rarely pure and never simple.
我对扮演英雄不感兴趣。我对扮演人类感兴趣。
心理过程之所以存在,是因为它们服务于生命的延续。
I always try to be positive and enjoy every moment.