 The Iranian philosopher Ibn Sina [Avicenna] (d. 1037 CE) organized his philosophical encyclopedia “The Healing” in four sections: Logic, mathematical, and natural sciences, and sciences of the Divine; the doctrine on the human soul was part of the natural sciences. The Andalusian Ibn Rushd [Averroes] (d. 1198 CE) was a faithful disciple of Aristotle and he stuck to the organization of the Aristotelian corpus implemented by Andronicus of Rhodes (fl. 1st century BCE), a scholar of the Peripatetic school who gave the science of the soul a place of its own, as would Averroes. On the Soul belongs to the physical works, but it is devoted to living natural beings with considerable focus on humans and their capacities for sensation and thought, and Andronicus placed it after the first four physical treatises and before metaphysics. The mentioned treatises are the Physics, On the Heavens, On Generation and Corruption, and the Meteorology.