John Stuart Mill,
Principles of Political Economy
“ That country which has the strongest demand for the commodities of other countries as compared with the demand of other countries for its own commodities will pay the burden of the export duty. Thus far of duties on exports. We now proceed to the more ordinary case of duties on imports: “We have had an example of a tax on exports, that is, on foreigners, falling in part on ourselves. We shall therefore not be surprised if we find a tax on imports, that is, on ourselves, partly falling upon foreigners. ”
