Abstract
Given the continued significance of ideology as a social and political phenomenon, political science must consider the important contributions made to ideology theory made over the last thirty years by Louis Althusser. In this essay, I offer a critical exegesis of Althusser's views, focusing on the concept of reading, on the various conceptions of ideology held by Althusser, on the distinction Althusser made between ideology and science, and on his theory of the subject. This study of his thought makes three claims: (1) that Althusser's views, billed as a radical break with bourgeois thought, can be assimilated easily into social scientific understandings about ideology; (2) that Althusser's theory has internal difficulties rooted in the tension between positive and negative conceptions of ideology; and, (3) that Althusser left unanswered the key question of the means to ideological liberation.