The Melkite Qusta Ibn Luqa (c. 820-912) of Baalbek was one of the most prominent figures in the #ArabicTranslation movement rendering works esp in mathematics and astronomy 1/
One of his important original compositions was الرسالة في الفرق بين الروح والنفس that was rendered into #Latin as De differentia spiritus et animae by John of Seville (1100-1180) in Toledo in 1130 and was highly influential in #Baghdadi #Aristotelianism 2/
The Arabic was first edited in 1952 by Hilmi Ziya Ülken (d. 1974) and he pointed out the importance of Qusta as one bringing together the study of #philosophy and #medicine and contributing to medieval #psychology 3/
There is an 1985 dissertation by Judith Wilcox on this important work and Tzvi Langermann discusses its influence on the Baghdadi Christian Peripatetic Ibn al-Tayyib (d. 1043) academia.edu/7163376/Abū_al… 4/
More recently there is a #Persian translation published by #Intishara_e_mawla undertaken by historian of science Behram Zahedi 5/
Qusta is a class example of someone who strikes us as a minor figure in comparison to #Kindi #Farabi #Avicenna but in terms of influence was a major figure of his time 6/
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