Coal’s future depends on our ability to make it cleaner and more efficient.

每一条法律规则的存在都归因于一个目的，一个实际的目标。

Come,my friends,Tis not too late to seek a newer world,For my purpose holds to sail beyond the sunset，And though we are not now that strength which in old days moved earth and heaven,That which we are, we are;-- One equal temper of heroic hearts, Made weak by time and fate, but strong in will. To strive, to seek, to find, and not to yield。

同有修养的人交谈，胜过闷头读十年书。

True leadership is measured by the growth of those you lead.