Gregory of Nyssa (c. 335 – c. 395 CE) was a Christian bishop, theologian, and philosopher. He is widely regarded as one of the Cappadocian Fathers, a title he shares with Basil the Great and Gregory of Nazianzus. Born into a family noted for their piety, he was the younger brother of Saint Basil the Great. Gregory's theological work laid the foundation for the development of Christian mysticism, T...