Doctor of the Church
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Doctor of the Church, also referred to as Doctor of the Universal Church, is a title given by the Catholic Church to saints recognized as having made a significant contribution to theology or doctrine through their research, study, or writing.
Hildegard von Bingen was an eleventh-century Doctor of the Church, depicted here by Marshall with a book, the common iconographical attribute for a doctor.
The Four Great Doctors of the Western Church were often depicted in art, here by Pier Francesco Sacchi, c. 1516. From the left: Saint Augustine, Pope Gregory I, Saint Jerome, and Saint Ambrose, with their attributes.
Image: Gregorythegreat
Basil of Caesarea
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Basil of Caesarea, also called Saint Basil the Great, was a bishop of Caesarea Mazaca in Cappadocia, Asia Minor. He was an influential theologian who supported the Nicene Creed and opposed the heresies of the early Christian church, fighting against both Arianism and the followers of Apollinaris of Laodicea.
Russian icon of Basil of Caesarea
Icon of the Three Holy Hierarchs: Basil the Great (left), John Chrysostom (center) and Gregory the Theologian (right)—from Lipie, Historic Museum in Sanok, Poland.
Basil of Caesarea Correr Museum Venice