David Ricardo Quotes
It is not by the absolute quantity of produce obtained by either class, that we can correctly judge of the rate of profit, rent, and wages, but by the quantity of labour required to obtain that produce.
Ricardo, David. On the Principles of Political Economy, and Taxation. John Murray, 1817, p. 83.
At the time this was generally true for most businesses. However, in a modern economy, there are other ways. Increasing volume, automation, innovating products and services to get premium prices naw are standard techniques.
David Ricardo was a British political economist, one of the most influential of the classical economists along with Thomas Malthus, Adam Smith and James Mill. He was also a politician, and a member of the Parliament of Great Britain and Ireland.