A man of genius makes no mistakes. His errors are volitional and are the portals of discovery.

The past is always a rebuke to the present.

"There is no sun without shadow, and it is essential to know the night."

能源行业在变化，我们也必须如此——适应是生存的关键。

社会系统是个人与个人之间、群体与群体之间关系的网络。