Lettres métissées is the name I gave to my graduation project. This reflection on the links that unite or disunite the Latin and the Arabic alphabet began while I was participating in an exchange programme in the Fine Art Academy of Beirut (Lebanon). In this project, I mainly questioned how alphabets and languages can influence each other, and studied various topics like what we call today Arabizi (writing Arabic with Latin script), or the competition that was launched during the XXe century by the Arabic Language Academy in Cairo in order to reform the Arabic script, but also how Latin script spread during colonization.