A mathematical truth is universal and eternal.
Happiness is not the absence of problems but the ability to deal with them.
需要一颗没有烦恼和恐惧的心才能体验真正的幸福。
Leadership in the coal industry today means navigating the delicate balance between economic necessity and environmental responsibility.
I'm going to use all my tools, my God-given ability, and make the best life I can with it.