Adam Smith 
Inquiry Into the Nature and Causes of Wealth of Nations [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The annual labour of every nation is the fund which originally supplies it with all the necessaries and conveniencies Of life which it annually consumes, and which consist always either in the immediate produce of that labour, or in what is purchased with that produce from other nations. According therefore, as this produce, or what is purchased with it, bears a greater or smaller proportion to the number of those who are to consume it, the nation will be better or worse sup plied with all the necessaries and conveniencies for which it has occasion.