This collection of essays is addressed to the legacy of Enlightenment thought, with respect to eighteenth-century notions of human nature, human rights, representative democracy or the nation-state, and with regard to the barbarism, including the Holocaust, allegedly unleashed by eighteenth-century ideals of civilization. Each author offers an interpretation of modern or postmodern philosophy against the background of a so-called Enlightenment Project, envisaged as the conceptual ghost that haunts modernity.