‘Very great are your words’

This chapter evaluates the Manichaean Kephalaia-collections from the perspective of recent developments in the study of late-antique rhetoric, specifically the role and context of dialogue in ancient literature and philosophy. It pays close attention to the recently edited material from the Coptic text, The Chapters of the Wisdom of my Lord Mani, by analysing the engagements between Mani and a number of teachers associated with the court of the Sasanian monarch, Shapur I. The chapter highlights the importance of Mani’s dialogues with competitor figures from the Sasanian Empire to the development of the religious identity of Manichaeans in late-antique Persia and Egypt