—— 请按键盘 空白键 开始游戏 ——

The world is full of obvious things which nobody by any chance ever observes.
文字的力量是巨大的;它们可以治愈,可以毁灭,可以创造世界。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
The best way to learn mathematics is to do mathematics.