“Let us merely discuss the question, what consequences would necessarily follow if, ceteris paribus, with an increasing quantity of money, prices were restricted to the old level by official compulsion? An increase in the quantity of money leads to the appearance in the market of new desire to purchase, which had previously not existed; 'new purchasing power', it is usual to say, has been created. If the new would-be purchasers compete with those that are already in the market, then, so long as it is not permissible to raise prices, only part of the total purchasing power can be exercised.”