The City of God (De Civitate Dei)

Augustine of Hippo's The City of God is a primary foundational theological and philosophical text; the atlas records no publisher and no exact publication year because it survives through manuscript transmission from late antiquity rather than a single dated modern edition. Its strength is that it is the primary source itself, written by Augustine across more than a decade in response to Rome's sack in 410, not a later description of his argument. Its limit is the ordinary one for citing an ancient text without specifying a translation: this record does not establish which edition underlies a given quotation from it.