Church Father · c. AD 335–395

Gregory of Nyssa

Younger brother of Basil of Caesarea, one of the three Cappadocian Fathers, and the most philosophically speculative of the three. His letter To Ablabius ("On 'Not Three Gods'") is his best-known attempt to explain how Father, Son, and Spirit are each fully God without being three gods; his Great Catechism is an early systematic (if not scholastic) overview of Christian doctrine for instructing catechists.

Brief introduction from the source collection. A full library biography has not yet been prepared.