创作永不是自私的，这是为其他人服务的。一个人若不进行应由他带给世界的创作，那就是在混日子。
Making art is not selfish； it’s for the rest of us. If you don’t do your thing， you are cheating us.
The man who moves a mountain begins by carrying away small stones.
——在北京蒙藏统一政治改良会欢迎会的演说，1912年9月1日
In every problem, there is a hidden pattern waiting to be discovered, and it is our duty as mathematicians to uncover it.
If someone tells you he is going to make a “realistic decision”, you immediately understand that he has resolved to do something bad.
数学是概念之间关系的科学，与内容无关。
The challenge of architecture is to create spaces that are both functional and beautiful.
惩罚时不避忌权贵，奖赏时不遗忘地位低下的人。