自守形式的研究是数学思想深度的反映。

We must invest in people as much as we invest in technology; both are essential to progress.

如果能够擂鼓让天下的人都达到义，那么我的义难道不是更进一步了吗？ 

My idea of heaven is a great big baked potato and someone to share it with.

The trust of the innocent is the liar's most useful tool.

There was another life that I might have had, but I am having this one.

In mathematics, the art of proposing a question must be held of higher value than solving it.

——反复对革命党人说

The beauty of mathematics is that it is so simple yet so powerful.