Keep learning. It's the only way to stay relevant in a fast-changing world.

The most exciting moments in mathematics are when you see connections between things that seemed unrelated before.

我们所知道的很少，我们所不知道的却是无限的。

最有效的发展干预措施往往是最简单的。

翻译：事物的增减盈亏，都是随时间的变化而变化的。