人的价值或价值，如同所有其他事物一样，是他的价格；也就是说，为使用他的力量所愿意付出的代价。
The value or worth of a man is, as of all other things, his price; that is to say, so much as would be given for the use of his power.
The best ideas often come from challenging the status quo.
变化的速度永远不会比今天更慢。
煤炭行业要深化供给侧结构性改革，提高供给质量。