above or below its value, so now the international migration of gold would take place for the same reason. Just as in the former case, every change in the production of the circulating metal affected its quantity and, thereby, prices, so would the same effect be produced now by international import and export. As soon as the relative values of gold and commodities or the normal quantity of currency would be restored, no further production would take place in the former case, and no further export or import in the latter, except in so far as would be necessary to replace outworn coin and to meet the demand of manufacturers of articles of luxury. It follows “that the temptation to export money in exchange for goods, or what is termed an unfavorable balance of trade, never arises but from a redundant currency.”[142] “The exportation of the coin is caused by its cheapness, and is not the effect, but the cause of an unfavourable balance.”[143] Since the increase or decrease in the production of gold in the former case and the importation or exportation of gold in the latter, take place only whenever its volume rises above or sinks below its normal level, i. e. whenever gold appreciates or depreciates in comparison with its bullion value, or whenever prices of commodities are too high or too low; it follows that every such movement works as a corrective,[144] since, through the resultant expansion or contraction of the currency, prices are restored to their true level: in the former case this level represents the balance between the respective values of gold and of commodities; in the latter, the international balance of currencies. To put it in other words: money circulates in different countries only in so far as it circulates as coin in every country. Money is but coin and all the gold existing in a country must therefore enter circulation, i. e. it can rise above or fall below its value as a token of value. Thus we safely land again, by the round-about way of this international complication, at the simple dogma which constituted our starting point.