Nicolas Eyguesier (Lille University 1, GATE L-SE) ‘Mixed debts and constitutions in Sismondi’ The issue of public debt goes through the whole work of Sismondi, from his Tests on the Constitutions of Free Peoples (1799) where he devotes a chapter to the Social Sciences Studies (1836-1838), where he deals with the international sovereign debt market. We will look at these different chapters of the world’s theory, linked to its c...