Still on RobinsonThe debate on internaturality also takes place through mythical and narrative texts, which are often more effective than many cognitive arguments. This efficacy might ultimately consist in the ability to deal figuratively, i.e. not on the basis of purely rational arguments, but through indeed fantastic figurations, with complex and fundamental issues. The Defoe’s novel Robinson Crusoe is a true manifesto of Western colonialism's proprietary conception of nature. The vast literature that followed conversely elaborates differently on the narrative possibilities offered by the adventure of a man who is 'shipwrecked' on an island, where nature seems to reign uncontaminated in opposition to the culture represented by the human being. Following Lotman's hypothesis on the relationship between the text and the culture that expresses it, in particular, we can think of the Island as a well-defined semiosphere, facilitated by being a unity of space, within which a situation of monologic, i.e. the absence of dialogue, can occur, or conversely of dialogicity between different instances evolving through contact between the diversity and alterity of natures and cultures. Particularly significant are the outcomes of Tournier's inversion of the Robinson myth, which right from the title puts the so-called 'savage' at the centre of the novel (Vendredi ou les limbes du Pacifique, 1967), widely commented on by authors such as R. Barthes, A.J. Greimas, B. Latour. internaturality, narrative efficacy, island literature, semiotics of cultures.