Book excerpt: Affirming Antonio Gramsci's continuing influence, this adroitly cultivated Companion offers a comprehensive overview of Gramsci's contributions to the interdisciplinary fields of critical social science, social and political thought, economics and emancipatory politics. Within the tradition of historical materialism, it explores the continuing impact of Gramscian perspectives in the present day. Featuring contributions from eminent scholars, the Companion engages with Gramsci's thought in the broader context of his life, outlining his innovative theoretical and historical analyses of capitalist modernity. Key themes within Gramscian theory are examined such as historical bloc, passive revolution, integral state, and civil society, which elaborate upon the core concept of hegemony. Chapters map out the development of historical materialism and rigorously analyse contemporary issues of urgency including climate breakdown, the rise of far-right populism, and increasing geopolitical tension. Offering a state-of-the-art review of Gramscian theory, this Companion will prove beneficial to academics, researchers and students from across the social sciences and humanities, and will be essential reading for those interested in political economy and political theory, sociology, philosophy, radical and feminist economics, environmental studies, gender studies, and post-colonial and cultural studies.