a variation in the objective exchange-value of money can arise only when a force is exerted in one direction that is not cancelled by a counteracting force in the opposite direction. If the causes that alter the ratio between the stock of money and the demand for it from the point of view of an individual consist merely in accidental and personal factors that concern that particular individual only, then, according to the law of large numbers, it is likely that the forces arising from this cause, and acting in both directions in the market, will counterbalance each other.
Ludwig von Mises, The Theory of Money and Credit
capitalism, economics, freedom, money