Presented as a paper at a translation studies congress in Trieste and printed as such in 1973 in the corresponding Proceedings, later published as a book by Einaudi in 1991 (and reissued in 2021, corrected and expanded), the essay "Volgarizzare e tradurre" stood out then and continues to stand out today for the original triple perspective from which the subject is approached: the terminological (with vulgarizzare revealing a vertical consideration of translation, so to speak, from the language felt to be more prestigious to the popular one, Luther's Greenutschen), the linguistic (with the old debate on "translating-betraying" or on translation ad sensum or ad verbum) and the philosophical, which sees in the background of the act of translating the difficult solution of the confrontation between different cultures and civilizations, a "dialectical motto" much studied by Folena. Folena's great essay on translation, Volgarizzare i tradurre (Translating and Translating), dense and complex, rich in erudition, ideas, and problems, has given translation studies a novel perspective of diachronic research, firmly rooted in a vision of translation as an essential activity, as a means of communication, contact, and exchange between languages ​​and cultures, and as an activity of civic engagement among different peoples and human societies. It is to be hoped, therefore, that the publication of this valuable study, which systematizes and anticipates many issues and is the first segment of a broader history of translation, along with other works by Folena on the same subject, will contribute to a deeper understanding of a body of work that is still capable of opening up valid avenues, lines of inquiry, and research, and will in turn provide an opportunity for the recognition, in Spanish, of the author's place in the vast bibliography on the act of translating.