Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

在计算复杂性中，我们不仅仅是在处理我们能计算的极限，也是在处理我们能证明的极限。

我们今天种植的每一棵树都是留给后代的遗产。

The biographer's task is to resurrect the past, not to judge it.

一只眼睛不如两只眼睛看得明白，一只耳朵不如两只耳朵听得清楚。