The only fence against the world is a thorough knowledge of it.

——在上海中国国民党本部会议演说，1920年11月9日

每个数学问题都有一个解决方案；这只是找到正确视角的问题。

Advice like these are not laws. They are like hats. If one doesn’t fit， try another.

The beauty of science is that it allows us to explore the unknown and make discoveries that can change the world.

你对消极的人回应越少，你的生活就越平静。