Ernesto Laclau (Spanish: [laˈklaw]; 6 October 1935 – 13 April 2014) was an Argentine political theorist and philosopher. He is often described as an 'inventor' of post-Marxist political theory. He is well known for his collaborations with his long-term partner, Chantal Mouffe. He studied History at the University of Buenos Aires Faculty of Philosophy and Letters, graduating with a licenciatura in 1964, and received a PhD from the University of Essex in 1977. Laclau died of a heart attack in Seville in 2014.