Antonio Gramsci (1891-1937) was an Italian Marxist theorist and politician who emphasized the role of the state in society and introduced the concept of hegemony, where the ruling class maintains dominance through consent rather than coercion. He critiqued democracy as a facade for bourgeois hegemony, asserting that capitalism will not collapse without the proletariat developing its own consciousness and ideology. Gramsci's work explores the dialectical relationship between social forces, class struggle, and the formation of ideology and consciousness.