His Excellency Kallistos Ware is the Orthodox Metropolitan Bishop of Diokleia. As an Orthodox monk, he spent many years at monasteries in Greece. A highly respected theologian, he lectured in Eastern Orthodox Studies at Oxford University for 31 years and is now a Fellow of Pembroke College. His best-known work is "The Orthodox Church". Together with colleagues he has translated into English 4 of the 5 volumes of the Philokalia, an important collection of sacred writings in the Orthodox tradition.