The objective of this book is to better acquaint English-speaking linguistics with a corpus of texts hitherto untranslated, containing the cognitive-based research in formal linguistics of one of the most important theoreticians in the field: Antoine Culioli (1924). Culioli's viewpoint is grounded in Emile Benveniste's (1902-1976) revolutionary answer to Saussure's opposition between competence (langue) and performance (parole) captured in the idea of énonciation, in which the relationship between an individual and a language is one of appropriation. The translation has been prepared to provide the reader with as obstacle-free a path as one can clear to a theory that requires, and indeed commands, a very close, attentive reading. As an additional aid to understand Culioli's argument, footnotes throughout the work show similarities and differences with the work of the cognitive linguist: Ronald W. Langacker.