This interview presents the genealogy of the anti-debt struggle, the campaigns for debt cancellation, the empirical foundation, the political battles and the concepts of the “illegitimate,” “illegal” or “odious” nature of public debt. In other words, how it is necessary for the Committee for the Abolition of Illegitimate Debt (CADTM) – formerly known as the Committee for the Abolition of Third World Debt – to ally with opposition forces and social movements, where the concepts and the people involved can challenge and overpower debt and its “system” once the government hears their voice. Yet, for CADTM the outright priority is to fortify the activities described below rather than lobbying.