The Wealth of Nations by Part 1 Chapter 10 Page 77

with their own particular species of industry, which is in reality to keep it always understocked. Each class was eager to establish regulations proper for this purpose, and, provided it was allowed to do so, was willing to consent that every other class should do the same. In consequence of such regulations, indeed, each class was obliged to buy the goods they had occasion for from every other within the town, somewhat dearer than they otherwise might have done. But in recompense, they were enabled to sell their own just as much dearer; so that so far it was as broad as long, as they say; and in the dealings of the different classes within the town with one another, none of them were losers by these regulations.

But in their dealings with the country they were all great gainers; and in these latter dealings consists the