"This book explores the epistemological history of the notion of ideology in the theoretical debate that stretches from Plato to Marx. It is argued that it is only from the modification of the structure of classical philosophical reflection, completed by Marx, when the emergency of ideology, as an original theoretical category, it becomes possible. Then, this paper Aboca to pesquisar both modern formulas
determination of ideology as the most contemporary responses (Laclau, Freeden), tested against the challenge presented by the post-structuralism, to descriptive and negative programs of study of ideology.
Finally this book rehearses the possibility of revitalizing the critique of ideology in post-metaphysical times, through an interweaving between Habermas and Žižek. It concludes with a re-conceptualization of the notion of ideology, recognizing the permanence of the "need" category of the true, places the praxis of individuals as the main "locus" of both the ideological delusion and the critical emancipation. "