—— 请按键盘 空白键 开始游戏 ——

In uncertain times, flexibility is more important than long-term planning.
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
愚蠢的人和聪明的人之间的区别——无论他们是否受过良好教育——在于聪明的人能够处理微妙之处。