 Abū Naṣr al-Fārābī (Iraq, c. 870–c. 950) devoted his career to introducing the work of Aristotle to educated Arabic-speaking citizens of the Islamic Empire. Several of his major writings are lost in whole or part.  But many of his books explaining Aristotle’s Organon (the collection of Aristotle’s writings on logic and related subjects) have survived, and the number of them available in Western translations is increasing steadily.  For general information on al-Fārābī see the entry on  Al-Farabi.