This book presents a study of Tutaméia - terceiras estórias, Guimarães Rosa's last publication. Tutaméia is one of Guimarães Rosa's most radical linguistic-literary projects, a writing experiment that involves all dimensions of literary production, from the materiality of the book, object and compound of signs, to the immateriality of the work. From this perspective, through the interpretative mechanisms of intertextuality and intratextuality, the book seeks to elaborate a way of understanding this last and unique writing by the author of Grande Sertão: Veredas, in order to defend the primacy of Tutaméia as the ultimate development and best expression of the unique properties of Rosa's writing, already present in previous writings.