If you don’t make mistakes, you’re not working on hard enough problems. And that’s a big mistake.

The coal industry must evolve to meet modern environmental standards, or it will become obsolete.

Collaboration between industry leaders and local communities creates the strongest forest management solutions.

心灵应作为目的本身来研究。

我不相信运气，我相信努力。

The best preparation for tomorrow is doing your best today.