John Stuart Mill,
Essays on some unsettled Questions of Political Economy
“ Suppose that a country should be opened to our merchants, disposed to buy from us in abundance, but which can sell to us scarcely anything, as every commodity which it affords could be got cheaper by us from some other quarter. Nevertheless, our trade with this country will enable us to obtain from all other countries their commodities at a lower price. At the first opening of this commerce of mere exportation, we must have received in payment a large quantity of money; for which our customer will have been indemnified by other countries, in exchange for her commodities. ”
