Contents -- 1. Introduction -- 2. Greek and Arabic Antecedents -- Stages of Human Intellect -- The Kind of Entity That the Active Intellect Is -- The Active Intellect as a Cause of Human Thought -- The Active Intellect as a Cause of Existence -- Conjunction with the Active Intellect -- Immortality -- 3. Alfarabi on Emanation, the Active Intellect, and Human Intellect -- Al-Maīda al-Fādila and al-Siyāsa al-Madaniyya -- Alfarabi's Philosophy of Aristotle -- The Risāla fi al-'Aql -- Alfarabi's Commentary on the Nicomachean Ethics -- Concluding Note -- 4. Avicenna on Emanation, the Active Intellect, and Human Intellect -- The Emanation of the Universe -- the Active Intellect as a Cause of the Existence of the Sublunar World -- Stages of Human Intellect -- the Active Intellect as the Cause of Human Thought -- Imagination, Cogitation, Insight -- Conjunction and Immortality -- Prophecy -- Summary -- 5. Reverberations of the Theories of Alfarabi and Avicenna -- Avicenna's Islamic Successors -- Reverberations in Medieval Jewish Philosophy -- Reverberations in Scholastic Philosophy -- Summary -- 6. Averroes on Emanation and on the Active Intellect as a Cause of Existence -- General Considerations -- The Emanation of the Universe -- The Active Intellect as a Cause of Existence: Epitomes of the Parva naturalia and the Metaphysics -- The Active Intellect as a Cause of Existence: The Commentary on De generatione animalium -- The Active Intellect as a Cause of Existence: The Long Commentary on the Metaphysics and Tahāfut al-Tahāfut (Destructio destructionum) -- Summary -- 7. Averroes on the Material Intellect -- Introduction -- The Epitome of the De anima and the Epistle on the Possibility of Conjunction -- A Minor Composition on Conjunction and the Middle Commentary on the De anima.

Averroes' Long Commentary on the De anima and his Commentary on Alexander's De intellectu -- Summary -- Averroes' Theories of Material Intellect as Reflected in Subsequent Jewish and Christian Thought -- 8. Averroes on the Active Intellect as the Cause of Human Thought -- The Passage of the Human Intellect to Actuality -- The Possibility of Conjunction with the Active Intellect -- Immortality -- Prophecy -- Averroes' Shifting Picture of the Universe and of Man's Place in It -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- U -- V -- W -- Z.