For the present i shall only remark that so long as the quantity of a natural agent is practically unlimited, it cannot, unless susceptible of artificial monopoly, bear any value in the market, since no one will give anything for what can be obtained gratis 这里我仅仅指出,只要某种自然要素的数量实际上是无限的,则除非能被人垄断,否则它在市场上就不会有任何价值,因为没有人会用东西换取可以无偿得到的东西。