The poor dream all their lives of getting enough to eat and looking like the rich. And what do the rich dream of? Losing weight and looking like the poor.

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

生存斗争是生命的本质。

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

海洋不仅仅是资源；它是我们的未来。