Posterity has been unfair to Jacques Fournier. During past decades, the attention of historians has been focused almost exclusively on the famous inquisitorial register of the bishop of Pamiers, which is, in the end, merely a document of his administrative practices. At the same time the scholarly works of the Cistercian theologian have remained utterly forgotten. While little or nothing survives of his oeuvre, it was actually in Avignon during his time both as cardinal and as pope that Fournier wrote his great theological opus. This monumental commentary on the Gospel of Matthew, magnificently preserved in six volumes in the papal library, has, however, rarely found a voice. It was partially published, and even then only by accident, by a Dominican who believed that he was editing the works of his fellow friar, Benedict XI (1303–1304). A second aspect of Fournier’s intellectual production is linked to his position as theological advisor to John XXII (1316–1334) during the most important doctrinal trials of the years 1325–1333. Of this activity, which is both cause and effect of his dazzling ascent to the papal Curia in this period, only the dossier of his arbitrations on the debate concerning the Beatific Vision has been preserved, although it remains for the most part unpublished. In what follows I add to this list a new document identifying one of his earliest theological assessments – an opinion or piece of advice given on the occasion of the last phase of the trial against the Commentary on the Apocalypse by the Franciscan theologian Peter John Olivi.