The Wealth of Nations by Part 4 Chapter 5 Page 12

pecuniary wages proportionable to that in the pecuniary price of their subsistence. So far as it operates in the one way, it must reduce the ability of the labouring poor to educate and bring up their children, and must, so far, tend to restrain the population of the country. So far as it operates in the other, it must reduce the ability of the employers of the poor to employ so great a number as they otherwise might do, and must, so far, tend to restrain the industry of the country.

The extraordinary exportation of corn, therefore, occasioned by the bounty, not only, in every particular year, diminishes the home, just as much as it extends the foreign, market and consumption, but, by restraining the population and industry of the country, its final tendency is to stunt and restrain the gradual extension of the home