—— 请按键盘 空白键 开始游戏 ——

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
实现不可能的唯一方法,就是相信它是可能的。
"Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad."
The greatest courage is to love in spite of everything.
你无法控制你无法衡量的东西。