—— 请按键盘 空白键 开始游戏 ——

The past is a foreign country; they do things differently there.
A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.
我不是圣人,但我也不是罪人。
The first rule of quality is that it must be defined.
Success is a team effort—no one achieves greatness alone.