 The project demonstrates a novel conviction that the rational dialogue between religions is, as Mayer (2010, 53) pointed out, “the way to establish a single faith and a sigle universal religious law based on overcoming the differences between the three monotheist religions: Chrstianity, Judaism and Islam”. But the project that Ramon Llull resolved to undertake entailed a greater difficulty that he himself acknowledged: he had none of the knowledge necessary for such an undertaking. Consequently, a fundamental part of his project would be his education in two cultures and languages he did not thoroughly know: Latin and Arabic.