The greatest problem for mathematicians now is probably the Riemann Hypothesis.
我认为战胜恐惧的唯一方法就是告诉它滚开。
官员不会永远尊贵,百姓也不会永远贫贱。
政治是每个公民的义务,逃避政治本身就是一种政治立场。
The boldness of his mind was matched by the candor of his speech.
Small changes in farming practices can lead to big impacts on global food security.