Basil the Great

Basil of Caesarea, known as Basil the Great, was one of the most eminent Church Fathers and one of the three Cappadocian Fathers (alongside Gregory of Nazianzus and Gregory of Nyssa). Born into a deeply Christian family in Caesarea of Cappadocia (present-day Turkey), he received an excellent education in Athens and Constantinople. After a period of asceticism and monastic travel in Egypt and Syria, he dedicated himself to monastic life and is considered the legislator of Eastern monasticism. Becoming Bishop of Caesarea in 370, he was a fierce defender of Nicene orthodoxy against Arianism and its various ramifications. His theological works, particularly "On the Holy Spirit" and his letters, are fundamental to the understanding of Trinitarian doctrine. He was also a pioneer in organizing Christian social welfare, founding the "Basiliad," a complex that included a hospital, a hospice, and an asylum for the poor. His liturgy is still used in Eastern Churches. He is venerated as a Doctor of the Church.