That's not it, but you motivated me to finally find a copy online. As with the passage you linked, the essay I have in mind is from The Wealth of Nations, in th

That's not it, but you motivated me to finally find a copy online. As with the passage you linked, the essay I have in mind is from The Wealth of Nations, in this case Book V.1.135–143. It starts here: http://www.econlib.org/library/Smith/smWN20.html#V.1.135 http://www.econlib.org/library/Smith/smWN20.html#V.1.135