The comparative discussion of the two compendiums highlights in particular the teaching structure and historical contextualisation of sources that offers new insights into the history of medieval political thought. We would draw attention to the specific novelties of the two texts. These included the importance of legal knowledge in the volume of Lambertini — Conetti, the centrality of Brunetto Latini and Tolomeo da Lucca in Briguglia, the rediscussion of the weight of political aristothelism in both volumes. It is also proposed to reread the concept of the dominium proposed in Quidort’s potested De Regia, comparing it with the textuality that discusses the ownership and status of the coin in the 14th century. A second comparison is proposed between the position of Quidort and the discussions on the personal nature of property taxes drawn up by lawyers Bérmond de Montferrier and Pierre Jame in late XIII and late 14th century.