你不必成为数学家也能对数字有感觉。

我总是尊重对手，因为他们让我变得更好。

《在北京五族共和合进会与西北协进会的演说》，1912年9月3日。

You have to be able to admit when you're wrong and move on.

In mathematics, the simplest questions often lead to the most profound discoveries.

The only thing that can make you a winner is your resilience.

关爱别人,这是最为博大的；使别人受益,这是最为深厚的。