'''Barlaam of Calabria''', also known as '''Barlaam of Seminara''' was a humanist scholar and [[monasticism|monastic]] [[heretic]] of the fourteenth century who is noted for his dispute with St. [[Gregory Palamas]] over the [[hesychasm|hesychast ]] prayer and the doctrine behind it.

In contrast to Palamas' teaching that the "glory of God" revealed in various episodes of Jewish and Christian Scripture (e.g., the [[Burning Bush|burning bush ]] seen by Moses) was the uncreated Energies of God, Barlaam held that they were created effects, because no part of God, whatsoever, could be viewed by humans.

The Zealots of [[Thessalonica ]] were influenced by Barlaam's teachings. He was a master of Greek and the writings of Petrarch and Giovanni Boccaccio owe much to him as he was their initial instructor in the Greek language.