Gold and silver, like other commodities, have an intrinsic value, which is not arbitrary, but is dependent on their scarcity, the quantity of labour bestowed in procuring them, and the value of the capital employed in the mines which produce them.
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。
Sometimes the only way to survive is to become someone else.
"The best way to learn mathematics is to do mathematics."
The sea gives us abundance, but it demands respect in return.
The people who are crazy enough to think they can change the world are the ones who do.