我们教授一门学科不是为了培养关于该学科的小型活图书馆，而是让学生自己学会数学思考。

行为的基本法则对所有生物都是一样的。

"We are all exiles from our childhoods."

Will you wilt under criticism， or will you follow your convictions？

We should not only pursue technological leadership but also the practicality and popularity of technology.

Every problem is an opportunity in disguise.

过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。