The arithmetic of L-functions is a window into the soul of number theory.

现实总是比我们对它的任何想法都更加丰富。

Education is the most powerful weapon which you can use to change the world.

When you focus on doing what's right rather than what's easy, success follows naturally.

每个圣人都有过去，每个罪人都有未来。

Hunger and poverty are the root causes of much of the world's unrest and misery.

The companies that will thrive are those that see environmental challenges as opportunities for innovation.