(b) It is also very easy to see, that the current price of produce, that is, what is gotten in return for the sale of what is gotten out of the land-parcels, must have a dominant influence upon what can be paid as rent for the use of the parcels. Unless the return from the produce be sufficient to reward at current rates the present labor and capital employed upon the parcel, the parcel will not continue to be cultivated at all, otherwise men would act without a motive for action, which they never do; unless, therefore, the price of produce be more than high enough to repay current wages and profits, there will be nothing left for Rent; and, consequently, the amount of the rent that can continue to be paid for lands will be _the difference between the going price of what is produced from them and the current expenses of cultivating them_. Here, as everywhere else within the domain of Exchange, Competition exerts its beneficent action. If one dealer, or ten, endeavors to put a price upon the produce more than enough to pay current wages and profits with a fair margin for the diminishing rate of rent, there are a plenty of others, dealers in the same grade of produce, who will be content with a fair return for present and past expenditure of labor and capital; and the action of these will effectually debar the others from exorbitant rates. The price of produce, accordingly, under free competition, is the divinely appointed regulator of landed rents. It regulates also, though more indirectly, the current rates of wages and profits in agriculture.