The Wealth of Nations by Part 2 Chapter 3 Page 9

originally destined for replacing a capital and for maintaining productive labourers only, yet when it comes into their hands whatever part of it is over and above their necessary subsistence may be employed in maintaining indifferently either productive or unproductive hands. Thus, not only the great landlord or the rich merchant, but even the common workman, if his wages are considerable, may maintain a menial servant; or he may sometimes go to a play or a puppetshow, and so contribute his share towards maintaining one set of unproductive labourers; or he may pay some taxes, and thus help to maintain another set, more honourable and useful indeed, but equally unproductive.

No part of the annual produce, however, which had been originally destined to replace a capital, is ever directed towards maintaining unproductive