The Wealth of Nations by Part 4 Chapter 5 Page 81

by affording a ready market to the manufacturer, by taking his goods off his hand as fast as he can make their price to him before he has made them, enables him to keep his whole capital, and sometimes even more than his whole capital, constantly employed in manufacturing, and consequently to manufacture a much greater quantity of goods than if he was obliged to dispose of them himself to the immediate consumers, or even to the retailers. As the capital of the wholesale merchant, too, is generally sufficient to replace that of many manufacturers, this intercourse between him and them interests the owner of a large capital to support the owners of a great number of small ones, and to assist them in those losses and misfortunes which might otherwise prove ruinous to them.

An intercourse of the same kind universally