经济学最终是为了改善人类福祉。

I don't compete with anyone but myself. My goal is to be better than I was yesterday.

过去从未消亡，它甚至从未过去。

生命不是一个段落，死亡也不是一个括号。

"The beauty of computational complexity lies in its ability to classify problems based on their inherent difficulty."

当我们不在正确的道路上时，奔跑有什么用？

"The past is never dead. It's not even past."