"A journey is like marriage. The certain way to be wrong is to think you control it."

"Every wall has its own voice, and my job is to listen."

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

学习数学的最好方法就是做数学。

世界不是一个需要解决的问题；它是一个我们所属的生命体。