When he finally acquired a career as a cleric, he took an active part in the theological controversies between the Eastern Orthodox Church and the Roman Catholic Church, writing treatises on the Procession of the Holy Spirit, advocating the western usage. He was the tutor of the learned Theodore II Laskaris of the Nicaean Empire, and a great collector of classical texts.
When he secured his position as a cleric, he actively participated in theological debates between the Eastern Orthodox Church and the Roman Catholic Church, writing treatises on the Holy Spirit's procession, supporting the western approach. He was the mentor of Theodore II Laskaris, a scholar from the Nicaean Empire, and an accomplished collector of classical texts.