The exchangeable value of all commodities rises as the difficulties of their production increase.
David RicardoNothing contributes so much to the prosperity and happiness of a country as high profits.
David RicardoProfits might also increase, because improvements might take place in agriculture, or in the implements of husbandry, which would augment the produce with the same cost of production.
David RicardoIt appears to me that one great cause of our difference in opinion on subjects which we often discuss is that you have always in mind the immediate and temporary effects of particular changes, whereas I put these effects quite aside, and fix my whole attention on the long-term effects that will result from them.
David Ricardo