Paul Quentin Hirst (20 May 1946 - 17 June 2003) was a British sociologist and political theorist. He became Professor of Social Theory at Birkbeck, University of London in 1985 and held the post until his death from a stroke and brain haemorrhage.
He studied at the University of Leicester and the University of Sussex before taking up a lectureship at Birkbeck College in 1969. In 1972, he was one of the founding members of the Department of Politics and Sociology at Birkbeck. He was appointed Reader in Social Theory in 1978 and Professor seven years later.
During the 1970s he became well known (along with Barry Hindess) as the main figure in British Althusserianism. By the late 1970s and 1980s, however, Hirst had become a critic of Louis Althusser's brand of Marxism. Drawing upon Foucault but also Quine and Wittgenstein, he criticised essentialism, epistemological discourses and the possibility of any general theory, in a move against careless sociological constructionist imperialism. In his work on democratic governance, he turned towards the ideas of the English political pluralists: J. N. Figgis, G. D. H. Cole, and Harold Laski. During the late 1980s and early 1990s, Hirst developed a theory of associationalism which attempted to revive social democracy by providing an alternative to state socialism and free-market liberalism. He also made important contributions to critical legal theory.
His later work, with Grahame Thompson resulted in an influential criticism of fashionable theories of economic globalisation, demonstrating the continued importance of the nation-state. His book 'War and Power' is a historical-sociological analysis of the development of the modern state and state system and addresses some of current political challenges including climate change. His last book 'Space and Power' clearly demonstrated his intellectual scope. In the book he investigates the relationship between space and power, arguing that the exercise of power is both constrained by and shapes the character of the built environment.
With Mark Cousins, Colin MacCabe, and Richard Humphreys, he founded the London Consortium in 1993. He chaired the Executive Committee of Charter 88 and was an early and regular contributor to openDemocracy.