Question: Which of the studies Phillip Cary concentrated on at Eastern University was an early North African Christian theologian and philosopher whose writings influenced the development of Western Christianity and Western philosophy?

Context paragraphs:
Eastern Christianity: Eastern Christianity consists of four main church families: the Eastern Orthodox Church, the Oriental Orthodox churches, the Assyrian Church of the East, and the Eastern Catholic churches (that are in communion with Rome but still maintain an Eastern liturgy).  The term is used in contrast with Western Christianity (namely the Latin Church and Protestantism).  Eastern Christianity consists of the Christian traditions and churches that developed in the Middle East, Africa, Eastern Europe, Asia Minor, the Balkans, Southern India and parts of the Far East over several centuries.  The term does not describe a single communion or religious denomination.  Some Eastern churches have more in common historically and theologically with Western Christianity than with one another.  The various Eastern churches do not normally refer to themselves as "Eastern", with the exception of the Assyrian Church of the East and its offshoots.

Transitus: In Western Christianity, the Transitus ("translation" from Ecclesiastical Latin: crossing) refers to "the time of passage through death to life".  The Christian theologian German Martinez writes that:

Augustine of Hippo: Augustine of Hippo ( or ; 13 November 354 – 28 August 430) was an early North African Christian theologian and philosopher whose writings influenced the development of Western Christianity and Western philosophy.  He was the bishop of Hippo Regius in north Africa and is viewed as one of the most important Church Fathers in Western Christianity for his writings in the Patristic Era.  Among his most important works are "The City of God" and "Confessions."

Kabir: Kabir (Hindi: कबीर , IAST: Kabīr) was a 15th-century Indian mystic poet and saint, whose writings influenced Hinduism's Bhakti movement and his verses are found in Sikhism's scripture Adi Granth.  His early life was in a Muslim family, but he was strongly influenced by his teacher, the Hindu bhakti leader Ramananda.

Gallican Rite: The Gallican Rite is a historical version of Christian liturgy and other ritual practices in Western Christianity.  It is not a single rite but a family of rites within the Latin Church, which comprised the majority use of most of Western Christianity for the greater part of the 1st millennium AD.  The rites first developed in the early centuries as the Syriac-Greek rites of Jerusalem and Antioch and were first translated into Latin in various parts of the Western Roman Empire Praetorian prefecture of Gaul.  By the 5th century, it was well established in the Roman civil diocese of Gaul, an early center of Christianity.  Ireland too is known to have had a form of this Gallican Liturgy mixed with Celtic customs.  The rites can be considered part of what is now the Western branch of the Catholic Church.

Western Christianity: Western Christianity is a term referring to the scope of Christianity which developed in the areas of the former Western Roman Empire.  Western Christianity consists of the Latin Church of the Roman Catholic Church (in contrast to the Eastern churches in communion with Rome), the Waldensians, Hussites, and a wide variety of Protestant denominations, including Anglicanism, Anabaptism, Calvinism, Lutheranism, and others.  The name is applied in order to distinguish these from Eastern Christianity.

Phillip Cary: Phillip Cary (born June 10, 1958) is a philosophy professor at Eastern University with a concentration on Augustine of Hippo.  He received his Ph.D. from Yale Divinity School under Nicholas Wolterstorff.  He has written a number of books, including three published by Oxford University Press.  Additionally, he has provided lectures on the history of Christian theology as well as on major figures in ecclesiastical history for The Teaching Company.

William Hare (philosopher): William Hare (born February 7, 1944, Leicester, UK) is a philosopher whose writings deal primarily with problems in philosophy of education.  He attended Wyggeston Grammar School for Boys, 1955–62.  After receiving his B.A. from the University of London (1965), he gained an M.A. in philosophy from the University of Leicester (1968), and a Ph.D. in educational theory from the University of Toronto (1971).  He was Professor of Education and Philosophy at Dalhousie University from 1970–95, and subsequently Professor of Education at Mount Saint Vincent University until his retirement in June 2008.  He is now Professor

A History of Western Philosophy: A History of Western Philosophy is a 1945 book by philosopher Bertrand Russell.  A survey of Western philosophy from the pre-Socratic philosophers to the early 20th century, it was criticised for Russell's over-generalization and omissions, particularly from the post-Cartesian period, but nevertheless became a popular and commercial success, and has remained in print from its first publication.  When Russell was awarded the Nobel Prize for Literature in 1950, "A History of Western Philosophy" was cited as one of the books that won him the award.  Its success provided Russell with financial security for the last part of his life.

Bimal Krishna Matilal: Bimal Krishna Matilal (1935–1991) was an Indian philosopher whose influential writings present the Indian philosophical tradition as being concerned with the same issues as have been the theme in Western philosophy.  From 1977 to 1991 he

Supporting paragraphs: Phillip Cary Augustine of Hippo
Answer: Augustine of Hippo