"A landmark study that synthesizes a vast array of data, this study reveals clearly for the first time details of how the Roman Empire (both East and West) engaged with foreign peoples. The processes of assimilation, exclusion, war and peace, astral and environmental determinism all have resonance with how our world of the 21 century is being shaped. This is a book for their time, for our time, for all time."---Cliff Cunningham, Sun News Austin