“Every separate economic agent maintains a stock of money that corresponds to the extent and intensity with which he is able to express his demand for it in the market. If the objective exchange-value of all the stocks of money in the world could be instantaneously and in equal proportion increased or decreased, if all at once the money-prices of all goods and services could rise or fall uniformly, the relative wealth of individual economic agents would not be affected. Subsequent monetary calculation would be in larger or smaller figures; that is all.”