To accomplish this, he wrote De rectoribus Christianis, or On Christian Rulers, for Emperor Lothar I's son, Lothar II. This was designed to be an aid in his princely duties, and fit into a popular category of literature, the "mirror for Princes".
To assist in his role as prince, he wrote "De rectoribus Christianis," or "On Christian Rulers," for Emperor Lothar I's son, Lothar II. This work was a guide for princely duties and aligned with the genre of literature known as "mirrors for princes."