没有生态平衡，就没有真正的经济效益。

The only thing worse than training employees and losing them is not training them and keeping them.

I'm not perfect, I don't claim to be, and I don't expect anyone to be.

资源开发必须在经济增长和环境管理之间取得平衡。

The boundary between physics and mathematics is not as clear-cut as we might think.

"Sometimes, the only way to win is to refuse to play the game."

语言是存在之家。