His Eminence, the Most Reverend Metropolitan Kallistos (Ware) of Diokleia, MA, D.Phil, is a titular metropolitan of the Ecumenical Patriarchate in Great Britain. From 1966-2001 he was Spalding Lecturer of Eastern Orthodox Studies at the University of Oxford, and he is known around the world as one of Orthodox Christianity's leading scholarly and learned voices. Due to the immense success and abiding popularity of his Penguin book, The Orthodox Church, published under his former secular name, His Eminence is still known to some as Timothy Ware.
Metropolitan Kallistos joined the Institute's Board of Advisors in January 2012, in which role he brings his many decades of Orthodox academic experience to bear on the future, plans and shape of the Institute.
Born in Bath, Somerset (United Kingdom), Metropolitan Kallistos was educated at Westminster School (to which he had won a scholarship) and Magdalen College, Oxford, where he took a Double First in Classics as well as reading Theology. In 1958, at the age of 24, he embraced the Orthodox Christian faith, travelling subsequently throughout Greece, spending a great deal of time at the Monastery of St. John the Theologian in Patmos, where in due course he was tonsured a monk in 1966, receiving the name Kallistos in honour of St. Kallistos Xanthopoulos. He also frequented other major centers of Orthodoxy such as Jerusalem and Mount Athos. The same year as his tonsure, the then Father Kallistos was ordained to the priesthood.
Almost simultaneously, he became a lecturer at Oxford, teaching Eastern Orthodox Studies -- a position which he held for 35 years, until his retirement in 2001. In 1979, he was appointed to a Fellowship at Pembroke College, Oxford, and in 1982, he was consecrated to the episcopacy as a titular bishop with the title Bishop of Diokleia, appointed to serve as the assistant to the bishop of the Ecumenical Patriarchate's Archdiocese of Thyateira and Great Britain. Despite his elevation, Kallistos remained in Oxford and carried on his duties both as the parish priest of the Greek Orthodox Community of the Holy Trinity in Oxford (which he founded), and as a lecturer at the University.
Since his retirement in 2001, His Eminence has continued to publish and to give lectures on Orthodox Christianity, travelling widely. Until recently, he was the chairman of the board of directors of the Institute for Orthodox Christian Studies in Cambridge. He is the chairman of the group Friends of Orthodoxy on Iona, and serves on the advisory board of the Orthodox Peace Fellowship.
On March 30, 2007, the Holy Synod of the Ecumenical Patriarchate elevated the Diocese of Diokleia to Metropolis and Bishop Kallistos to Metropolitan of Diokleia.