The dead have left us clues in their DNA.

There is no doubt that in exchanging a self-centered for a selfless life we gain enormously in self-esteem. The vanity of the selfless, even those who practice utmost humility, is boundless.

The infrastructure industry must transform towards green development to achieve sustainability.

天下很多所谓可以做的事情，未必都是可以做的啊！ 

只为自己活着的人，不值得活在世上。

环境不仅仅是限制因素，更是文化发展中的创造性力量。