Who was Montesquieu?

Charles de Secondat, Baron de la Brede et de Montesquieu (1689-1755) of Bordeaux, France and author of "On the Spirit of Laws" which defines the process of sepration of powers embedded in US Constitutional Law was a student of history, science and law. Montesquieu

A French political philosopher who advocated the separation of executive and legislative and judicial powers (1689-1755).