Includes index

Part one: The problem of doctrinal development -- 1. The state of the problem -- Newman's criteria of authenticity -- Dewart's historical conclusions -- The interrelation between history and theology -- 2. The role of historical study -- Historical theology -- The task of patristic research -- Doctrinal issues and patristic scholarship -- Part two. Doctrinal development in patristic theology -- 3. Cyprian on original sin -- Augustine on Cyprian -- Cyprian on infant Baptism -- The significance of tertullian -- Eastern and Western views -- 4. Athanasius on Mary -- Controversy between East and West -- Development by Extrapolation -- Devotion and dogma -- Specifying the subject -- Hilary on filioque -- Development of the doctrine of the Holy Spirit -- The importance of Hilary -- Hesitancy about speculation -- Congruence of Immanent and economic -- Trinitarian reciprocity