<div>The publication of <i>Reading Capital</i>-by Louis Althusser, Étienne Balibar, Roger Establet, Pierre Macherey, and Jacques Rancière-in 1965 marked a key intervention in Marxist philosophy and critical theory, bringing forth a stunning array of concepts that continue to inspire philosophical reflection of the highest magnitude. <i>The Concept in Crisis</i> reconsiders the volume's reading of Marx and renews its call for a critique of capitalism and culture for the twenty-first century. The contributors-who include Alain Badiou, Étienne Balibar, and Fernanda Navarro-interrogate Althusser's contributions in particular within the context of what is surely the most famous collective reading of Marx ever undertaken. Among other topics, they offer a symptomatic critique of Althusser; consider his writing as a materialist production of knowledge; analyze the volume's conceptualization of value and crisis; examine how leftist Latin American leaders like Che Guevara and Subcomandante Marcos engaged with Althusser and <i>Reading Capital</i>; and draw out the volume's implications and use for feminist theory and praxis. Retrieving the inspiration that drove Althusser's reinterpretation of Marx, <i>The Concept in Crisis</i> explains why <i>Reading Capital</i>'s revolutionary inflection retains its critical appeal, prompting readers to reconsider Marx's relevance in an era of neoliberal capitalism.<br><br>Contributors. Emily Apter, Alain Badiou, Étienne Balibar, Bruno Bosteels, Adrian Johnston, Warren Montag, Fernanda Navarro, Nick Nesbitt, Knox Peden, Nina Power, Robert J. C. Young</div>