'Abbād ibn Sulaymān -- 'Alī ibn Muḥammad al-Qūšī -- 'Allama al-Ḥillī -- Abd al-Jabbār -- ʻAbdallaṭīf al-Baġdādī -- Abdurrahman Bistāmī -- Abraham ibn Ezra -- Abū Bakr al-Bāqillānī -- Abū Bakr al-Rāzī, Muḥammad ibn Zakarīyāʼ (Rhazes) -- Abū Bishr Mattā ibn Yūnus -- Abū Hāshim al-Jubbā'ī -- Abū l-Barakāt al-Baġdādī -- Abū l-Faraj ibn al-ʻlbrī (Barhebraeus) -- Abū l-Hūdhayl -- Abū Sulaymān al-Sijistānī al-Manṭiqī -- Adam Wodeham -- Adelard of Bath -- Aesthetics -- Aesthetics, Byzantine -- Afḍal al-Dīn al-Kašānī (Bābā Afḍal) -- Ahmad ibn Hanbal -- al-ʻĀmirī, Abū l-Ḥasan -- Alan of Lille -- al-Balkhī, Abū Zayd -- al-Baṭalyūsī, Abū Muḥammad ibn al-Sīd -- Albert of Saxony -- Albert the Great -- Albertism -- al-Bīrūnī, Abū Rayḥān -- Alchemy in the Arab World -- Alchemy in the Latin World -- Alexander of Aphrodisias and Arabic Aristotelianism -- Alexander of Hales -- Alexandrian Tradition into Arabic: Medicine -- Alexandrian Tradition into Arabic: Philosophy -- al-Fārābī, Abū Naṣr -- al-Fārābī, Latin Translations of -- al-Ġazālī, Abū Ḥāmid Muḥammad -- al-Ġazālīʼs Maqāṣid al-Falāsifa, Latin Translation of -- al-Iskafī -- al-Jāḥiẓ -- al-Juwaynī -- al-Kindī, Abū Yūsuf Yaʻqūb ibn Isḥāq -- al-Kindī, Latin Translations of -- al-Lawkarī -- al-Mubashshir ibn Fātik -- al-Naẓẓām -- al-Rāzī -- al-Sarakhsī, Aḥmad ibn al-Ṭayyib -- al-Shahrastānī, Muḥammad ibn ʻAbd al-Karīm -- al-Shahrazūrī, Muḥammad ibn Maḥmūd Shams al-Dīn -- al-Suhrawardī, Shihāb al-Dīn Yaḥyā al-Maqtūl -- al-Tawḥīdī, Abū Ḥayyān -- Anatoli (Ya'aqob Anatoli) -- Anselm of Canterbury -- Apollonius of Tyana -- Arabic Philosophical Texts, Jewish Translations of -- Arabic Texts: Natural Philosophy, Latin Translations of -- Arabic Texts: Philosophy, Latin Translations of -- Arethas of Caesarea -- Aristotelianism in the Greek, Latin, Syriac, Arabic, and Hebrew Traditions -- Aristotle, Arabic -- Aristotle, Arabic: Physics -- Aristotle, Arabic: Poetics -- Arnaldus de Villanova -- Astrology -- Aṯīr al-Dīn al-Abharī -- Atomism -- 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Ḍirār ibn Amr -- Divine Law -- Divine Power -- Domingo de Soto -- Dominicus Gundissalinus -- Doxographies, Graeco-Arabic -- Durand of St. Pourçain -- Economic Thought in the Middle Ages -- Emotions -- Epistemology -- Epistemology, Byzantine -- Essence and Existence -- Ethics -- Ethics, Arabic -- Ethics, Byzantine -- Ethics, Jewish -- Eustratios of Nicaea -- Fakhr al-Dīn al-Rāzī -- Feudal Law -- Form and Matter -- Francesc Marbres -- Francis of Marchia -- Francis of Meyronnes -- Francisco de Vitoria -- Future Contingents -- Gabriel Biel -- Galen, Arabic -- Garlandus the Computist -- George Gemistos Plethon -- George of Trebizond -- George Pachymeres -- George Scholarios (Gennadios II) -- Gerard Odonis -- Gerard of Cremona -- Gersonides -- Gilbert of Poitiers -- Giles of Rome, Political Thought -- Giovanni Pico della Mirandola -- Godescalk de Nepomuk -- Godfrey of Fontaines -- Greek Texts Translated into Hebrew -- Gregory Akindynos -- Gregory of Rimini -- Gregory Palamas -- Guido Terreni -- Hāfiz Raǧāb al-Bursī -- Happiness -- Hasdai Crescas -- Heloise -- Henry Harclay -- Henry of Ghent -- Heresy -- Hermes Trismegistus -- Hervaeus Natalis -- Heymeric of Camp -- Hildegard of Bingen -- Hillel ben Shemuel of Verona -- Hishām al-Fuwaṭī -- Hugh of St. Victor -- Ḥunayn ibn Isḥāq -- Ibn Abī Jumhūr al-Ahsā'i -- Ibn al-Malāḥīmī -- Ibn al-Samḥ -- Ibn al-Ṭayyib -- Ibn ʻArabī, Abū Bakr Muḥammad Muḥyiddīn -- Ibn Bājja, Abū Bakr ibn al-Sāʼiġ (Avempace) -- Ibn Farīġūn -- Ibn Ḥazm of Cordoba -- Ibn Ḥindū, Abū l-Faraj -- Ibn Kammūna, ʻIzz al-Dawla -- Ibn Khaldūn, Abū Zayd ʻAbdarraḥmān -- Ibn Masarra, Muḥammad ibn ʻAbdallāh -- Ibn Rushd (Averroes), Latin Translations of -- Ibn Rushd, Muḥammad ibn Aḥmad al-Ḥafīd (Averroes) -- Ibn Sabʻīn, ʻAbd al-Ḥaqq -- Ibn Sīnā (Avicenna), Latin Translations of -- Ibn Sīnā, Abū ʻAlī (Avicenna) -- Ibn Suwār (Ibn al-Khammār) -- Ibn Ṭufayl, Abū Bakr (Abubacer) -- Ibn Ṭumlūs -- Ibn Zurʻa, ʻĪsā ibn Isḥāq -- Ikhwān al-Ṣafāʼ, Encyclopedia of -- Impetus -- Induction -- Inquisition -- Insolubles -- Intension and Remission of Forms -- Intention, Primary and Secondary -- Intentionality -- Internal Senses -- Intuitive and Abstractive Cognition -- Isaac Israeli -- Isḥāq ibn Ḥunayn -- Isidore of Seville -- Ismāʻīlī Philosophical Tradition -- Jacobus de Altavilla -- Jacques Almain -- Jalāl al-Dīn al-Dawānī -- James of Metz -- James of Viterbo -- Jean Regis -- Jerome of Prague -- Jesuit Political Thought -- Jodocus Trutfetter -- Johannes Brammart -- Johannes de Mirecuria -- Johannes Hiltalingen -- Johannes Hiltalingen de Basel -- Johannes Regis -- John Baconthorpe -- John Buridan -- John Calvin, Political Thought -- John Capreolus -- John Dumbleton -- John Duns Scotus -- John Fortescue -- John Gerson -- John Italos -- John Mair -- John of Damascus -- John of Jandun -- John of La Rochelle -- John of Paris -- John of Reading -- John of Salisbury -- John Pecham -- John Philoponus -- John Scottus Eriugena -- John Torquemada -- John Wyclif -- Juan 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