可持续发展不是选择，而是煤炭行业的必然要求。
Sustainable development is not an option, but a necessity for the coal sector.
The best way to learn is by doing, not just by listening or reading.
Be realistic, demand the impossible!
我不在乎你是否被冒犯，我不是来让你开心的。
The difference between a good business and a bad business is that good businesses throw up one easy decision after another. The bad businesses throw up painful decisions time after time.
The only limit to our realization of tomorrow will be our doubts of today.
我知道自己是聪明的，因为我知道自己一无所知。