—— 请按键盘 空白键 开始游戏 ——

The only limit to our realization of tomorrow is our doubts of today.
One is not struck by the truth until prompted quite accidentally by some external event.
释义:推究古代的事例来验证今天的情况,从而避免困惑;先揣度事情的始末,后仔细考虑,从而应对突发情况。这是对借鉴历史、谨慎行事的智慧的强调。