Roland Gérard Barthes (; French: [ʁɔlɑ̃ baʁt]; 12 November 1915 – 26 March 1980) was a French literary theorist, philosopher, linguist, critic, and semiotician. Barthes' ideas explored a diverse range of fields and he influenced the development of many schools of theory, including structuralism, semiotics, social theory, design theory, anthropology, and post-structuralism.