对于好的建议，唯一能做的就是传递它。它对自己从来没有任何用处。
"The only thing to do with good advice is to pass it on. It is never of any use to oneself."
黄金和白银，像其他商品一样，具有内在价值，这不是任意的，而是取决于它们的稀缺性、获取它们所耗费的劳动量以及在矿山中使用的资本价值。
可持续性不是一个流行词，而是矿业前进的唯一道路。
A fisherman's wisdom lies not in how much he catches, but in how much he leaves behind.
I don't need a reason to be grateful.