—— 请按键盘 空白键 开始游戏 ——

Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.
"The past is always with us, for it feeds the present."
数学中最激动人心的时刻是当你意识到两个看似不相关的领域有着深刻的联系时。
Great leaders don’t create followers—they create more leaders.