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".
He composed "De rectoribus Christianis," or "On Christian Rulers," for Emperor Lothar I's son, Lothar II. This work was intended to be a guide for his princely duties and fit into the genre of literature known as "mirrors for princes."