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。
"Books are the mirrors that reflect our struggles."
我不想坠入爱河,我想坠入成功。
The only limit to our realization of tomorrow is our doubts of today.
经济政策中的规则而非自由裁量权有助于避免短期政治压力的陷阱。