—— 请按键盘 空白键 开始游戏 ——

The only way to discover the limits of the possible is to go beyond them into the impossible.
数学不知道种族或地理界限;对于数学来说,文化世界是一个国家。
贫贱是苦难的境界,能很好地居于其境者就苦中有乐;富贵是快乐的境地,不能很好地对待富贵的人便会乐极生悲。
Profit should never come at the expense of the planet.