先读经书，再读史籍，以经论史，评论古人史事，就不会与圣贤相悖；研读史籍，再温经书，以史证经，读书目的升华，决不仅为章句之学。

The most important part of teaching is to teach what it is to know.

"The past is always tense, the future perfect."

In the energy sector, collaboration is key to solving the world's most pressing challenges.