The best literature is that which challenges us, which makes us think, which forces us to confront the uncomfortable truths of our existence.

追求数学知识是一段永无止境的旅程；总有更多的东西等待发现和理解。

We don't inherit the earth from our ancestors; we borrow it from our children.

我们今天开采的矿物也必须服务于后代的需求。