 Alfarabi’s major work is Book of the opinions of the inhabitants of the righteous  city[30].  It is an exposition of a Neo-Platonist emanationist system as well of the different kinds of societies. Alfarabi wanted a perfect city, ruled by a righteous man parallel to the rule of the universe by the perfect One. His connecting cosmogenic explanations and political plans were known to Avempace who did not follow him. Avempace does not quote this or other works by Alfarabi which have a similar content. He quotes Plato but follows the opposite way. While Plato in the Republic would take the human soul as the model for the perfect city, so that the perfect organization inside it tells how the city has to be organized, Avempace starts from the ideal city and wants to transfer its organization to the individual (Abbès 2011: 86).