The arithmetic of L-functions is a key to unlocking the secrets of number theory.

Psychology must be based on observable facts, not speculation.

Quality is not an act, it's a habit.

不了解一个国家的文学，就无法理解这个国家的历史。

最成功的公司是那些能够适应不断变化的市场条件的公司。

Success in life means doing that thing than which nothing else is more dear to you.