This additional volume offers a revised edition of Lingua, Erasmus’ work on language, its possibilities and the dangers in its use, ending in a praise of the Word of God. Since it deals with the moral implications of language, Erasmus placed it in Ordo IV that comprises works on moral issues. The Latin text is presented in a critical edition, accompanied by introductions and a commentary in French, elucidating difficult passages, tracing Erasmus’ sources and offering all linguistic, historical, theological and philological information needed to understand the text.