Antoine Nasri Messarra (b. 1938), a pioneer of Constitutional and Political Science in Lebanon and the Arab region, outlines a selection of the fundamental political ideas he developed over the course of his academic career. Messarra focuses on his critique of Arab political science in its reliance on a diasporic political culture that adopts European theories of nation building and applies them to Middle Eastern societies, without bringing to bear Arab-Islamic heritage in dealing with pluralism in those societies. Messarra argues that Arab production in political science has been dominated by two approaches. The first are diaspora approaches that draw on European Jacobite models , which have consequently failed to understand the Arab social dynamics. These include sectarianism studies that overlook ethnoreligious diversity and secularization research that rejects the Islamic constitutional tradition. The second (smaller) group are authentic approaches, which Messarra argues are grounded in reality and draw on the region’s heritage.