—— 请按键盘 空白键 开始游戏 ——

你可以锁上你的图书馆,但没有任何门、锁或门闩能禁锢我思想的自由。
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.
There are two kinds of companies, those that work to try to charge more and those that work to charge less. We will be the second.
数学证明不仅仅是验证,而是一个揭示更深层次真理的故事。