Specters of Marx: The state of the debt, the work of mourning and the new international (French: Spectres de Marx: l'état de la dette, le travail du deuil et la nouvelle Internationale) is a 1993 book by French philosopher Jacques Derrida. It was first presented as a series of lectures during “Whither Marxism?”, a conference on the future of Marxism held at the University of California, Riverside in 1993.