Are Western and Islamic political and constitutional ideas truly predestined for civilizational clash? In order to understand this controversy The Concert of Civilizations begins by deriving and redefining a definition of constitutionalism that is suitable for comparative, cross-cultural analysis. The rule of law, reflection of national character, and the clear delineation and limitation of governmental power are used as lenses through which thinkers like Cicero, Montesquieu, and the authors of The Federalist Papers can be read alongside al-Farabi, ibn Khaldun, and the Ottoman Tanzimat...