In 434, three years after the council of Ephesus, he wrote the Commonitorium adversus profanas omnium haereticorum novitates, in which he ultimately aims at Augustine's doctrine of grace and predestination.
Besides the list in Bohn's Lowndes, which is somewhat of an omnium gatherum, three lists drawn with more or less care were compiled in the 19th century.
He endeavoured to reconcile the Protestant churches with the Roman Catholic, and at a conference at Hanover in 1683 presented his Regulae circa Christianorum omnium ecclesiasticum reunionem.
In September of the same year, by the bull Sollicitudo omnium ecclesiarum, he reconstituted the Society of Jesus.
This mountainous character and the absence of any tolerable harbour - Pliny, in enumerating the islands of the Aegean, calls it "importuosissima omnium" - prevented it from ever attaining to any political importance, but it enjoyed great celebrity from its connexion with the worship of the Cabeiri, a mysterious triad of divinities, concerning whom very little is known, but who appear, like all the similar deities venerated in different parts of Greece, to have been a remnant of a previously existing Pelasgic mythology.