Avempace also wrote on the health of a perfect man. He alluded to the idea that the perfect man does not just require physical health, but spiritual health too. Avempace goes into more detail about the soul, which he describes of having both an acquired intellect, as well as an active intellect. The active intellect has no basis coming from the physical world. Acquired intellect, however, is a result of experiences from the material world. The perfect man can exist in either a perfect city or a non-perfect city. However, if a perfect man lives in a non-perfect city, he believes that they are to remain apart from the rest of the society. This is because a non-perfect city is full of weeds. In order for a perfect person to preserve themselves from the weeds, they need to live in solitude despite living in solitude being against human nature.