"Happiness is not something ready-made. It comes from your own actions."

我的清白终于开始让我感到沉重。

一个人懒惰又奢侈，生活就会贫困；勤劳而节俭，生活就会富足。

In the realm of computational complexity, every problem is a universe waiting to be explored.

实现不可能的唯一方法就是相信它是可能的。