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 RicardoGold and silver, like other commodities, have an intrinsic value, which is not arbitrary, but is dependent on their scarcity, the quantity of labour bestowed in procuring them, and the value of the capital employed in the mines which produce them.
David RicardoBut it is clear that the price of labour has no necessary connection with the price of food, since it depends entirely on the supply of labourers compared with the demand.
David Ricardo