Page:The wealth of nations, volume 1.djvu/363

 acknowledged, are doubtful, and the actual discovery and successful working of a new mine can alone ascertain the reality of its value, or even of its existence. In this search there seem to be no certain limits either to the possible success, or to the possible disappointment of human industry. In the course of a century or two, it is possible that new mines may be discovered more fertile than any that have ever yet been known; and it is just equally possible that the most fertile mine then known may be more barren than any that was wrought before the discovery of the mines of America. Whether the one or the other of those two events may happen to take place, is of very little importance to the real wealth and prosperity of the world, to the real value of the annual produce of the land and labor of mankind. Its nominal value, the quantity of gold and silver by which this annual produce could be expressed or represented, would, no doubt, be very different; but its real value, the real quantity of labor which it could purchase or command, would be precisely the same. A shilling might in the one case represent no more labor than a penny does at present; and a penny in the other might represent as much as a shilling does now. But in the one case he who had a shilling in his pocket would be no richer than he who has a penny at present; and in the other he who had a penny would be just as rich as he who has a shilling now. The cheapness and abundance of gold and silver plate would be the sole advantage which the world could derive from the one event, and the dearness and scarcity of those trifling superfluities the only inconvenience it could suffer from the other.