Adam Smith was the first theorist of what we commonly refer to as capitalism. His 1776 work, An Inquiry into the Nature and Causes of the Wealth of Nations, Adam Smith theorized that within a given stable system of commerce and evaluation, individuals would respond to the incentive of earning more by specializing their production. These people would, without specific state intervention, "direct ... that industry in such a manner as its produce may be of the greatest value." This would enable the whole economy to become more productive, and it would therefore be wealthier. Smith stated that protecting particular producers would lead to inefficient production, and that a national hoarding of cash in the form of coinage would only increase prices.
Smith states that when people make a trade they value what they are purchasing more than they value what they are giving in exchange for a commodity. If this were not the case, then they would not make the trade but retain ownership of the more valuable item. This notion underlies the concept of