国君自以为神圣聪明，而不去咨询官吏，自以为国家安定强大，而不注重防守，周围的邻国图谋侵略他却不知道戒备。 

可持续性不是一种选择，而是煤炭行业的必需品。

夏天集

The more you know, the more you realize you don't know.

The Internet is a tool for communication, but it also requires us to be good listeners.

"The most dangerous kind of waste is the waste we do not recognize."

我不在乎别人怎么说我，我知道我是谁。