Ferdinand de Saussure, the founder of modern linguistics, was a pioneer of structuralist thinking - his was the linguistic model which inspired the European structuralists. Other key structuralists include Nikolai Trubetzkoy, Roman Jakobson, Louis Hjelmslev and Algirdas Greimas in linguistics, Claude Lévi-Strauss in anthropology, Louis Althusser in political science, Roland Barthes in literary criticism and Jacques Lacan in psychoanalysis (although the theories of Barthes and Lacan evolved into poststructuralist ones).