The nine papers collected here explore a broad range of sources for texts from the classical period of Arabic philosophy, and a broad range of influence exerted by these texts. By the 'classical period' is meant that part of the Arabic philosophical tradition normally included in the canon of 'medieval' philosophy. It begins in the ninth century, which is when the impact of Greek philosophical and scientific works began to be felt, thanks to their translation under the 'Abbasid caliphs, and ends in the twelfth century. This volume focuses on the influences felt by, and exerted by, the four main philosophers of this period: al-Kindi, al-Farabi, Avicenna, and Averroes. But the historical range covered extends well past the twelfth century, into Latin Renaissance philosophy and Islamic philosophy of the seventeenth century. Philosophical themes include human psychology, logic, the influence of Neoplatonism, and problems in Aristotelian natural philosophy.

Only preserved in a single manuscript in Tehran, this remarkable twelfth-century Qur'anic commentary by Muhammad b. 'Abd al-Karim al- Shahrast=an=i marks the achievement of a lifelong, arduous quest for knowledge. Shahrast=an=i began writing Mafatih al-asr=ar or Keys to the Arcana towards the end of his life and the work reflects the brilliant radicalism of his more private religious views. The introduction and opening chapter of this virtually unknown work is presented here in a bilingual edition, which also includes an introduction and contextual notes by Dr Toby Mayer.
In Keys to the Arcana, Shahrast=an=i breaks down the text of the Qur'an and analyses it from a linguistic point of view, with reference to the history of Qur'anic interpretation. The author's ultimate aim is to use an elaborate set of complimentary concepts - the 'keys' of the work's title - to unearth the esoteric meanings of the Qur'anic verses, which he calls the 'arcana' of the verses (asr=ar al-=ay=at). A historian of religious and philosophical doctrines, Shahrast=an=i has generally been considered to be a spokesman for the Sunni religious establishment under the Seljuqs. The complimentary concepts in question, however, appear to derive from the Isma'ili Shi'i intellectual tradition, indicating that the author may have been secretly involved in the Isma'ili movement.
Shahrast=an=i 's unusually esoteric and highly systematic exegesis of the Qur'an provides a vivid picture of the mature state of scriptural commentary in the twelfth-century CE. Dr Mayer's meticulous translation of Shahrast=an=i 's Introduction and Commentary on S=urat al-Fatiha, supplemented by the Arabic text, allows the reader and scholar access to this intriguing Muslim intellectual work for the first time.

I.B.Tauris in association with the Institute of Ismaili Studies The Persian philosopher Ibn Sina (d. 1037), known in Europe as Avicenna, was arguably the greatest master of Aristotelian thought in the Muslim world. The symbolical Poem on the Soul (Qasidat al-nafs), which portrays all earthly human souls as in temporary exile from heaven, is traditionally attributed to Avicenna, and was received with enthusiasm by its commentators. A highly significant commentary on the Qasida was written by ?Ali b. Muhammad b. al-Walid (d. 1215 CE), a major early representative of the Tayyibi Ismaili tradition, which emerged and flourished in medieval Yemen. In his view, the poem encapsulated Tayyibi beliefs, whose doctrines bear striking parallels with late antique Gnosticism. Avicenna s Allegory on the Soul presents the first edition of the Arabic text of Ibn al-Walid s commentary, The Useful Epistle (al-Risala al-mufida), alongside an English translation and extended introduction. It offers invaluable insight into the intricacies of Muslim thought and a deeper understanding of Avicenna s substantial intellectual legacy."

Only preserved in a single manuscript in Tehran, this remarkable twelfth-century Qur'anic commentary by Muhammad b. 'Abd al-Karim al- Shahrastani marks the achievement of a lifelong, arduous quest for knowledge. Shahrastani began writing Mafatih al-asrar or Keys to the Arcana towards the end of his life and the work reflects the brilliant radicalism of his more private religious views. The introduction and opening chapter of this virtually unknown work is presented here in a bilingual edition, which also includes an introduction and contextual notes by Toby Mayer. In Keys to the Arcana, Shahrastani breaks down the text of the Qur'an and analyses it from a linguistic point of view, with reference to the history of Qur'anic interpretation. The author's ultimate aim is to use an elaborate set of complimentary concepts - the 'keys' of the work's title - to unearth the esoteric meanings of the Qur'anic verses, which he calls the 'arcana' of the verses (asrar al-ayat). A historian of religious and philosophical doctrines, Shahrastani has generally been considered to be a spokesman for the Sunni religious establishment under the Seljuqs. The complimentary concepts in question, however, appear to derive from the Isma'ili Shi'i intellectual tradition, indicating that the author may have been secretly involved in the Isma'ili movement. Shahrastani 's unusually esoteric and highly systematic exegesis of the Qur'an provides a vivid picture of the mature state of scriptural commentary in the twelfth-century CE. Dr Mayer's meticulous translation of Shahrastani 's Introduction and Commentary on Surat al-Fatiha, supplemented by the Arabic text, allows the reader and scholar access to this intriguing Muslim intellectual work for the first time.