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Sustainability isn't an option; it's a necessity for the coal sector.
The most important thing is to enjoy your life—to be happy—it's all that matters.
Mathematics is the most beautiful and most powerful creation of the human spirit.
Operational effectiveness and strategy are both essential to superior performance, but they work in very different ways.
难以消化的美味,不要贪吃;难以获取的宝物,不要储藏;难以酬报的恩惠,不要接受;难以久处的朋友,不要交往;难以再现的光陰,不要失去;难以守护的资财,不要积贮;难以辩明的诽谤,不要辩白;难以解除的忿恨,不要计较。