Chapter 1 begins with a selective history of Christian–Hellenic intellectual engagement (including a detailed introduction to Julian and Cyril) in order to show simultaneously (1) the historical uniqueness (thus significance) of Julian’s and Cyril’s polemical projects and (2) the fitness of Alasdair MacIntyre’s insights for making sense of their engagement. The second half of the chapter presents MacIntyre’s analysis of the dynamics when “two large-scale systems of thought and practice are in radical disagreement,” with Julian and Cyril in mind. What I call “narrative conflict” is only one part of the theory that emerges from his argument, the complete scope of which pushes us also to consider whether traditions so engaged might have non-intersecting forms of reasoning. The chapter concludes with a brief consideration of what Julian’s and Cyril’s “narrative conflict” might contribute to how we think about religious and philosophical argument in late antiquity.