The Wealth of Nations by Part 2 Chapter 2 Page 29

with a profit, the value of their annual consumption.

So far as it is employed in the first way, it promotes prodigality, increases expense and consumption without increasing production, or establishing any permanent fund for supporting that expense, and is in every respect hurtful to the society.

So far as it is employed in the second way, it promotes industry; and though it increases the consumption of the society, it provides a permanent fund for supporting that consumption, the people who consume reproducing, with a profit, the whole value of their annual consumption. The gross revenue of the society, the annual produce of their land and labour, is increased by the whole value which the labour of those workmen adds to the materials upon which they are employed; and their net revenue