For 10 points, name this economist who wrote Principles of Political Economy and Taxation and espoused the Iron Law of Wages.
This economist asked "What need of a House of Commons or of a House of Lords?" in Observations on Parliamentary Reform. His namesake equivalence was popularized by Robert J. Barro. One of his works, subtitled "A Proof of the Depreciation of Bank Notes," argues for the adoption of a metallic currency and is titled The High Price of Bullion. His most famous work sets out a theory of rent which was criticized by Malthus, as well as introducing the idea of comparative value. For 10 points, name this economist who wrote Principles of Political Economy and Taxation and espoused the Iron Law of Wages.
This economist asked "What need of a House of Commons or of a House of Lords?"
David Ricardo