Every ton of coal we extract must create maximum value with minimum environmental impact.

暮春三月,穿上春天的衣服,约上五六人,带上六七个童子,在沂水边沐浴,在高坡上吹风,一路唱着歌而回

"The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success."

技术推动天文学的进步，更好的仪器带来更深刻的见解。

减少思虑，来调养心气；减少性欲来调养肾气；不要妄动，来调养骨气；戒止嗔怒，来调养肝气；饮食素淡，来调养胃气；减少话语，来调养神气；博鉴群书，来调养胆气；顺应时令，来调养元气。