ALTHUSSER, AN INTELLECTUAL ADVENTURE traces the development of Althusser's thought, which influenced a who's who of French philosophers, including Lacan, Foucault, Derrida, and Barthes. Credited with reinterpreting Marx in a way that encouraged readers to engage directly with his work, Althusser brought the Freudian concept of overdetermination to Marxist theory, and argued that Marx's work should not be read as one consistent whole, because there was a clear 'break' between his earlier and later writings. But Althusser's most enduring contribution may be the concept of ideological state apparatuses: institutions and social structures including schools, churches, and families, that serve to reinforce the capitalist state.