In 1836 he was elected a member of the Academy of Inscriptions, and in 1837 he published (with an introduction the conclusions of which would not now all be endorsed) a translation of a Provencal poem on the Albigensian war.
The oldest trustworthy sources know nothing of his having exercised the office of Inquisitor during the Albigensian war" (Griitzmacher).
He used often to organize formal disputations with Albigensian leaders, lasting a number of days.
Though in his ten years of preaching a large number of converts were made, it has to be said that the results were not such as had been hoped for, and after it all, and after the crusade, the population still remained at heart Albigensian.
While the Holy Land was thus at peace, crusaders were also being drawn elsewhere by the needs of the Latin empire of Constantinople, or the attractions of the Albigensian Crusade.2 But Innocent could never consent to forget Jerusalem, as long as his right hand retained its cunning.