所谓爱国心，是指因你生为这个国家的国民，相信这个国家比其他一切的国家高贵优越。

We may have grown older, but the music keeps us young at heart.

The future of packaging lies in materials that protect both the product and the planet.

Everything is a learning process: any time you fall over, it's just teaching you to stand up the next time.

Mathematics is the art of giving the same name to different things.

在沉默中，我们听到最真实的声音。