可持续性不是选择,而是矿业未来的必然要求。
The greatest monarch on the proudest throne, is oblig'd to sit upon his own arse.
数学不是观赏性运动,你必须参与其中才能理解。
出自汉·桓宽《盐铁论·疾贪》。欲,想。表,仪表,这句话指身体。下,指下属。先之身,先要求自己。要想影子正,就要先把自己的身子站直;要想下属清廉,自己要先做出表率。这句话以正影先正身为喻,说明正人先正己的道理。
我不需要王冠来证明我是国王。
"And this I believe: that the free, exploring mind of the individual human is the most valuable thing in the world. And this I would fight for: the freedom of the mind to take any direction it wishes, undirected."