可持续发展不是选择题，而是责任。

The coal industry is not just about digging rocks; it's about powering lives and fueling progress.

The mind is to be studied as an end in itself.

I like to be a free spirit. Some don't like that, but that's the way I am.

出自汉·桓宽《盐铁论·力耕》。非，不是。宝，这句话指好的办法。道，途径、方法。治家并不是只有一种有效的方法，治国并不是只有一条可行的途径。这句话言治家与治国一样，都有许多不同的方法，当事人应当努力寻求，不必因循守旧而无所作为。

登上梯子顶端的唯一方法就是一步一步往上爬。