衡量矿业公司成功的真正标准是它能否为后代留下积极的遗产。
勇气不是没有恐惧,而是继续前进的意志。
You know, in the Middle Ages, in England, when you met a very poor person, that person would be described as an "unfortunate" -- literally, somebody who had not been blessed by fortune, an unfortunate.