我们必须接受失望,因为它是有限的,但千万不可失去希望,因为它是无限的。
I'm not a perfectionist, but I like to feel that things are done well. More important than that, I feel an endless need to learn, to improve, to evolve.
在桂林学界迎会的演说,1922年1月22日
Mathematics is not just a tool; it is a way of thinking.