al-Kindi
Abu Yusuf Ya'qub ibn Ishaq al-Kindi (c. 801–873) was an Arab philosopher, mathematician, and physician based in Baghdad during the Abbasid caliphate. Often called the philosopher of the Arabs, he produced a large body of work on metaphysics, optics, music, astronomy, and medicine. He worked within the translation movement that carried Greek learning into Arabic, and he sought to reconcile Aristotelian and Neoplatonic thought with Islamic doctrine. Several of his treatises survive only in fragments or Latin versions.