INTRODUCING guide to the cult author, semiologist and analyzer of advertising, Roland Barthes. Roland Barthes is best known as a semiologist, a student of the science of signs. This sees human beings primarily as communicating animals, and looks at the way they use language, clothes, gestures, hair styles, visual images, shapes and colour to convey to one another their tastes, their emotions, their ideal self-image and the values of their society.