He spent much of his time in practising magic, and it was believed that he had so saturated his body with poisons that none could injure him.
Paphos owes its ancient fame to the cult of the "Paphian goddess" llacNaFavavaa, or 7) IIacaia, in inscriptions, or simply n 8ea), a nature-worship of the same type as the cults of Phoenician Astarte, maintained by a college of orgiastic ministers, practising sensual excess and self-mutilation.'
While still practising medicine he entered into relations with another master of Paris, the philosopher John of Jandun, who collaborated with him in the composition of the famous Defensor pacis (1324), one of the most extraordinary political and religious works which appeared during the 14th century.
Eusebius accepted the small bishopric of Emesa (the modern Horns) in Phoenicia, but his powers as mathematician and astronomer led his flock to accuse him of practising sorcery, and he had to flee to Laodicea.
After practising law with some distinction he entered the Episcopalian ministry in 1827 and proved a brilliant and impressive preacher, holding livings in New Haven, Philadelphia, New York and New Orleans, and declining several bishoprics.