Richard Taylor

Averroes asserts in his Long Commentary on the De Anima and in his Long Commentary on the Metaphysics that principles of the science of metaphysics are established in the science of psychology. In psychology, human intellectual understanding is found to require the separate agent intellect for the coming to be of knowledge. The analysis of human psychology establishes that intellect must exist and must be separate from the human being in existence. Moreover there exists potency in those things called intellect, thanks to the argument for the existence of the material intellect

After a very brief introduction, Davidson begins with an informed and detailed account of the views of Aristotle and his major commentators, whose writings had enormous influence on the development of the medieval traditions. Davidson's account is supplemented with a critical exposition of the relevant teachings from the Plotiniana Arabica, from al-Kindi, and from a treatise on the soul attributed to Porphyry in the Arabic tradition. Impressive as all this is, it is simply stage setting for Davidson's detailed accounts of the doctrines and arguments of al-Farabi, Avicenna, and Averroes.