"The line between hero and villain is often blurred by perspective."

Quality is not a chance; it is a choice.

In such condition there is no place for industry...and which is worst of all， continual fear and danger of violent death.

 言辞可以是工具，但它们也可以是武器。

The best research is driven by both curiosity and necessity.

阅读的第一课是如何独处。

真实的是整体。

数学中最深刻的思想往往源于最简单的观察。