Abstract
Luigi Taparelli dAzeglio, SJ (17931862) pioneered the nineteenth-century renewal of scholastic philosophy and natural-law thought. In his major theoretical work, the Theoretical Treatise of Natural Right Based on Fact, Taparelli elaborated a system of natural-law reasoning for addressing the whole range of social-scientific and political issues. His methodology incorporates scholastic natural-law analysis of objective human inclinations, reconciling theoretical conclusions with contingent historical facts.