—— 请按键盘 空白键 开始游戏 ——

To write is to remember, and to remember is to resist.
"The world is not a problem to be solved but a mystery to be lived."
The essence of mathematics lies in its freedom.
在茫茫的大沙漠上盲目地去找水井,真荒唐。然而我们还是开始去寻找了。
The minimum content of natural law is necessary for the survival of any society.