每块石头都有故事——我们的职责是确保这是个值得讲述的故事。

我不是说唱歌手，我是一个行走的传奇。

Every book is a door that opens onto another world, and every reader is a traveler who steps through it.

In mathematics, the simplest questions often lead to the most profound discoveries.

出自《论语·宪问篇》。遇到事情，不去抱怨上天，也不要去责备别人，应当能够扪心自问，好好地反省自己。