The Wealth of Nations by Part 2 Chapter 4 Page 18

commonly be given for the use of money being necessarily regulated by what can commonly be made by the use of it.

Any increase in the quantity of commodities annually circulated within the country, while that of the money which circulated them remained the same, would, on the contrary, produce many other important effects, besides that of raising the value of the money.

The capital of the country, though it might nominally be the same, would really be augmented. It might continue to be expressed by the same quantity of money, but it would command a greater quantity of labour. The quantity of productive labour which it could maintain and employ would be increased, and consequently the demand for that labour. Its wages would naturally rise with the demand, and yet might appear to sink.