P与NP问题是计算机科学中最重要的未解决问题之一。

I don't think limits.

We are all part of an unbroken chain of life.

幸福不是理性的理想，而是想象力的理想。

History is the present. That's why every generation writes it anew. But what most people think of as history is its end product, myth.

We are not victims of our circumstances. We are products of our decisions.

体育教育应与其他学科一样成为学校课程的重要组成部分。

Hatred destroys only the hater.

有你在的地方就是家。