Muslim philosopher Ibn Rushd, known to the Latin west as Averroes (ca. 1126–1198). The latter’s interpretation of Aristotle concluded that the intellect must be separate from matter. If the human intellect is totally immaterial, Averroes thought, there will be only one such intellect; but a single, immaterial intellect makes immortality impossible for individual souls. During his second Parisian regency (1268–1272), Aquinas wrote two separate treatises addressing these two contentious issues. He