—— 请按键盘 空白键 开始游戏 ——

Economic history teaches us that change is possible, but it is rarely easy.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
最伟大的定理往往来自于对显而易见之事的质疑。
研究历史就是学习时间的语法。