If I discover a manure which will enable me to make a piece of land produce 20 per cent more corn, I may withdraw at least a portion of my capital from the most unproductive part of my farm.
David RicardoExperience, however, shows that neither a state nor a bank ever have [sic] had the unrestricted power of issuing paper money without abusing that power; in all states, therefore, the issue of paper money ought to be under some check and control; and none seems so proper for that purpose as that of subjecting the issuers of paper money to the obligation of paying their notes either in gold coin or bullion.
David RicardoThe exchangeable value of all commodities rises as the difficulties of their production increase.
David Ricardo