—— 请按键盘 空白键 开始游戏 ——

The only true wisdom is in knowing you know nothing.
To lose one parent may be regarded as a misfortune; to lose both looks like carelessness.
这句话其实是莎士比亚借哈姆雷特之口说的,但是霍金非常喜欢,曾在自己著作中多次引用,所以很多人误以为本句话是霍金说的。
In the world of cryptography, the only secure system is the one that is never connected to any network.