—— 请按键盘 空白键 开始游戏 ——

The self is not a solid thing but a collection of echoes.
Space and light and order. Those are the things that men need just as much as they need bread or a place to sleep.
The history of mathematics is a history of human curiosity and ingenuity.
Cryptography is about communication in the presence of adversaries.
"I don't let pressure get to me."