Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.
释义:跟交情浅的朋友说过深的话题,是愚蠢的;生活贫困的人总是希望得到富贵者的施舍,是糊涂的;没有取得他人的信任就进献忠言,会被误解为批评。  
我们都是拼凑而成的,组成如此无定形和多样,以至于每一部分,每一刻,都在玩自己的游戏。
The only way to tell the truth is to speak without a mouth.
我们未说出口的话塑造我们的程度不亚于我们说过的话。