  One of the most important sources to keep in mind when reading Maimonides and Islamic medieval philosophers is the Theology of Aristotle, a text that, while thought by Jewish and Islamic philosophers to have been a work of Aristotle, was in fact an edited summary of parts of books 4-6 of Plotinus’ Enneads.[3]  Likely dated to the 9th century and edited by al-Kindi (and/or members of his circle), this text—as well as the rest of the Plotiniana Arabica and the Kalâm fî mahd al-khair (lit. the Discourse on the Pure Good, known to some in its later Latin translation as the Liber de Causis, or Book of  Causes)[4]—should  be read in connection with any serious study of Maimonides.  In way of summary, we might highlight the following key ideas in the Theology of Aristotle that play important roles for later Jewish and Islamic thinkers: