 Ghazâlî had successfully introduced logic into the madrasa (though it was studied in other venues as well (Endress 2006)). What happened to it after this time was the result of the activities of logicians much more gifted than Ghazâlî. This period has tentatively been called the Golden Age of Arabic philosophy (Gutas 2002). It is in this period, and especially in the thirteenth century, that the major changes in the coverage and structure of Avicennan logic were introduced; these changes were mainly introduced in free-standing treatises on logic. It has been observed that the thirteenth century was the time that “doing logic in Arabic was thoroughly disconnected from textual exegesis, perhaps more so than at any time before or since” (El-Rouayheb 2010b: 48–49). Many of the major textbooks for teaching logic in later centuries come from this period.