—— 请按键盘 空白键 开始游戏 ——

Mathematics is not a spectator sport. You have to do it to understand it.
You can't connect the dots looking forward; you can only connect them looking backwards.
The P versus NP problem is one of the most important unsolved problems in computer science.
在我们的内心深处被唤起的,就是那个久远的背景——古老的人类心理模式,它们源于遗传而非后天习得,我们从业已模糊的往日世代继承了它们。