—— 请按键盘 空白键 开始游戏 ——

The true value of a mathematician lies in the problems they leave behind.
You have to be strong mentally to succeed at the highest level.
我认为你能做的最好的事情就是对自己和他人友善。
——从浙江观潮返上海后题词,1916年9月15日
There is no solitude in the world like that of the big city.