Coal has been the backbone of industry, and with innovation, it can continue to be.

译文：物质方面的享受，我们要节俭几分才最好，为人处世能退让一步才算高明。赏析：基本的物质享受应该追求，但不能纵情享乐，醉生梦死。待人接物，不必事事都要争个高低，懂得收敛锋芒，才是智者。

Ignoring isn’t the same as ignorance, you have to work at it.

出自北齐·颜之推《颜氏家训·勉学》。不管是愚人还是聪明人，总想自己见多识广，但不肯读书，这就等于想吃饱饭却懒得做饭，想穿暖却懒得缝制衣服。

Innovation is not the goal; solving problems is.