"The only limit to our realization of tomorrow is our doubts of today."

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

我们没有什么可失去的，这是一种非常自由的感觉。

There is no such thing as society: there are individual men and women, and there are families.

What can be shown, cannot be said.

"In every ending, there is a beginning waiting to be discovered."

数学研究是所有智力和精神进步不可或缺的基础。