Born in the
Byzantine city of
Thessalonica, Prochoros entered the
Great Lavra, a monastery on
Mount Athos at a young age, and was eventually ordained a
hieromonk. He was greatly influenced by Western
Scholasticism. He collaborated with his brother
Demetrios Kydones in translating
Thomas Aquinas' monumental
Summa Theologica. Prochoros also made Greek translations of the works of
Augustine of Hippo and the 6th-century philosopher
Boethius. Prochoros' own treatise, (“On the Essence and Activity of God”), was a condemnation of the mystical theology of
Palamism, propagated by
Gregory Palamas. The Synod of Constantinople in 1368 condemned both of the brothers Kydones as heretics, and Prochoros was deposed from the priesthood. The chief source for Prochoros' life is a pair of polemical addresses by Demetrios, eulogizing his brother and denouncing Patriarch
Philotheus Kokkinos, who had been responsible for their condemnation. He died at
Mount Athos. == See also ==