The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.

The true measure of a farmer's success is not just yield per acre, but the legacy left for future generations.

The only way to have a friend is to be one.

Some people are extraordinarily good at knowing the limits of their knowledge because they have to be.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

智慧总是在它不再有任何用处时才降临到我们身上。

文章达到极致的人，必定是其人也达到极致。