Papers presented at the Twelfth International Conference on Patristic Studies held in Oxford 1995 (see also Studia Patristica 29, 30, 31 and 32). The Twelfth International Conference on Patristic Studies met in Oxford from 21 to 26 August 1995. These gatherings have assembled at four-yearly intervals since 1951. At each the number of papers presented has been greater than the previous occasion, and the size of the assembly is now limited only by the capacity of the buildings available. Some 650 scholars attended the 1995 Conference, including delegates from Russia, Georgia, India, Japan, South Africa, New Zealand, and Australia, as well as from North America and most countries in Europe. Papers were given in English, French, German, Italian or Spanish, and are normally printed in the language in which they were delivered. Some were fully developed lectures lasting for nearly an hour; the majority were communications of 12 minutes' duration: and a few came in between. These volumes contain 284 of the papers, including most of the lectures given in full session, viz. the Inaugural Address by Dr. H.D. Saffrey on 'Theology as a Science'; Prof. Dr.Suso Frank, 'John Cassian on John Cassian'; Prof. Dr. O. Skarsaune; 'Is Christianity Monotheistic ? Patristic Perspectives on a Jewish-Christian Debate'; and Prof. A. Louth, 'St. Maximus the Confessor: Between East and West'. Others report the finding of unpublished texts, deal with particular points, or present broad interpretations, sometimes original in character. For the first time a number of illustrations are included, reflecting the growing interest in iconography.