Semiotics is a general theory of all existing languages... all forms of communication - visual, tactile, and so on... There is general semiotics, which is a philosophical approach to this field, and then there are many specific semiotics.
Umberto EcoWe stopped to browse in the cases, and now that William - with his new glasses on his nose - could linger and read the books, at every title he discovered he let out exclamations of happiness, either because he knew the work, or because he had been seeking it for a long time, or finally because he had never heard it mentioned and was highly excited and titillated. In short, for him every book was like a fabulous animal that he was meeting in a strange land.
Umberto Eco