—— 请按键盘 空白键 开始游戏 ——

You have to believe in yourself when no one else does.
In mathematics, you don't understand things. You just get used to them.
自由不止一种……自由去做和自由免于。在无政府状态的日子里,是自由去做。现在你被给予了自由免于。不要低估它。
The path to discovery is rarely a straight line.