The Wealth of Nations by Part 1 Chapter 6 Page 18

confounds rent with profit, at least in common language. The greater part of our North American and West Indian planters are in this situation. They farm, the greater part of them, their own estates, and accordingly we seldom hear of the rent of a plantation, but frequently of its profit.

Common farmers seldom employ any overseer to direct the general operations of the farm. They generally, too, work a good deal with their own hands, as ploughmen, harrowers, etc. What remains of the crop after paying the rent, therefore, should not only replace to them their stock employed in cultivation, together with its ordinary profits, but pay them the wages which are due to them, both as labourers and overseers.

Whatever remains, however, after paying the rent and keeping up the stock, is called