Book of the Dispute of Raymond the Christian and Omar the Saracen

Book of the dispute of Raymond the Christian and Omar the Saracen (Latin: Liber disputationis Raimundi christiani et Homeri Saraceni) is an autobiographical work by Ramon Llull written in 1308 in Pisa. It documents the debate between the Catalan philosopher and an anonymous Muslim philosopher, whom Llull calls Homer and from whom no other information has reached us, although we can assume that his real name was Omar.

Source: Wikipedia — Book of the Dispute of Raymond the Christian and Omar the Saracen (CC BY-SA 4.0)