French philosopher. Montesquieu was one of the leading figures of early Enlightenment thought. His major works include "The Persian Letters" (1721), a satire of Old Regime France, "Thoughts on the Greatness and Downfall of the Romans" (1734), a major work on the philosophy of history, and his best known work, "The Spirit of Laws" (1748), which outlined his ideas of the nature of government, the importance of liberty, and the idea of separation of powers which underlies the United States Constitution. He was also a contributor to Diderot's Encyclopedie.
Bio by: Stuthehistoryguy