A now conventional model, developed by Robert Markus, sees late Roman cities as fundamentally secular landscapes. Focusing on Augustine's sermon against a feast of the genius of Carthage (Sermo 62), this article argues that narratives of ‘secularity’ have neglected pagans’ own attitudes and the circumstances that drove ordinary Christians’ participation in civic rites. Behind Augustine's charges of ‘idolatry’ lay the religious convictions of the feast's non-Christian sponsors and behind their expectations of Christian attendance lay the recent destruction of a pagan shrine on church property. For Augustine's listeners to construe the feast as religiously irrelevant was an expression not of routine social solidarity, but of fear before powerful patrons. What was ‘secular’ was open to doubt and negotiation, both here and in empire-wide celebrations such as the Kalends of January; the boundary between the ‘pagan’ and the ‘secular’ can be located only with careful attention to the diversity of opinions about each particular rite.

Cyprian's baptism is usually placed in 245–6, two to four years before he became bishop. The early treatise Ad Donatum is thus taken as a witness to the neophyte's spiritual ‘transition’. This article challenges this common biographical narrative. A date just before Cyprian's ordination in 248/9 fits the evidence better than 246. As comparison with Ad Quirinum suggests, the winsome portrait of Cyprian the true convert that Ad Donatum paints might have done more than exhort neophytes to zealous spirituality: it may also have been meant to silence the presbyters whom Pontius’ Vita and Cyprian himself portray as critics of his ordination.