我是一个笼子，在寻找一只鸟。

没有情感，就不会有黑暗向光明、冷漠向活力的转变。

The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.

We are all haunted by something, whether we admit it or not.

真正的旅程不在于发现新的风景，而在于用新的眼光去看。