抛弃不必要的欲望，你就能找到真正的自由。
The coal industry is not just about digging rocks; it's about powering progress and sustaining communities.
The most exciting breakthroughs of the 21st century will not occur because of technology but because of an expanding concept of what it means to be human.
Quality is remembered long after the price is forgotten.
The future belongs to those who believe in the beauty of their dreams.
The past is always tense, the future perfect.