The challenge with hepatitis C was not just to find the virus, but to understand how it evades the immune system.

生活的艺术在于克服困难而不战胜它们。

我的父亲是我最好的朋友和最伟大的榜样。

A good mathematician is someone who can see analogies between theorems. A great mathematician is someone who can see analogies between analogies.

国家的力量对于任何社会的成功都至关重要。

我们留下的遗产不仅以建筑衡量，更以对人们生活的影响衡量。