金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生产它们的矿山所投入的资本价值。
普罗旺斯语没有消亡;它沉睡在人们心中,等待被唤醒。
"The best way to lead is by example."
Sustainability isn't a cost center; it's the biggest business opportunity of our lifetime.