Commodus

Commodus is presented as the dangerous failure of hereditary security: the son of Marcus Aurelius, he inherited an empire that should have been easy to preserve, yet squandered that advantage through cruelty, rapacity, and a deliberate degradation of imperial dignity. His reign illustrates the book’s central warning that a prince may be destroyed not only by hatred but also by contempt, and that inherited legitimacy cannot compensate for conduct that alienates both subjects and supporters.

Identity and Political Position

Commodus belonged to the succession of Roman emperors examined from the reign of Marcus Aurelius to that of Maximinus. He was not a new prince dependent on a patron’s favor or a military faction’s immediate support; he came to power by hereditary right. That inheritance gave him an unusually strong foundation. Since he was the son of Marcus, he needed only to follow his father’s example to satisfy both the Roman people and the soldiery.

The contrast with new rulers is decisive. The book argues that a prince who inherits an established state can ordinarily preserve it with less difficulty than one who acquires power suddenly. Commodus therefore possessed the institutional and dynastic advantage that men such as Pertinax and Alexander lacked. His eventual fall cannot be explained by the fragility of a newly won title. It resulted from the way he used an inherited position.

Conduct and Dependence on the Army

Commodus is characterized as cruel and rapacious. To gratify his greed at the expense of the people, he sought the support of the army and allowed the soldiers every kind of excess. This choice placed him within the recurring conflict that defined the Roman Empire: the people preferred peace and sober rulers, while the soldiers favored a warlike prince, even one who was harsh, arrogant, or rapacious, because such a ruler enabled them to profit from the population.

His policy therefore rested on a dangerous bargain. By satisfying the soldiery, Commodus treated the people as expendable and made their hatred a condition of his rule. Yet military support was not enough to protect him, because his conduct produced a second and equally fatal defect. His cruelty made him hated, while his disregard for imperial dignity made him contemptible. The ruler who tries to secure power through one class must still avoid becoming intolerable to the others; Commodus failed on both fronts.

Contempt and the Loss of Imperial Dignity

The most visible expression of Commodus’s self-destruction was his repeated descent into the arena to fight gladiators. The book treats this not as harmless spectacle but as an utter disregard for the dignity of the imperial station. By appearing in a role beneath the office he held, he forfeited the awe and respect on which authority depended.

This conduct damaged him even among the soldiers whose favor he had cultivated. A prince may be admired for a warlike spirit, endurance, and severity, but Commodus’s public performances converted power into spectacle and authority into degradation. The result was a double judgment: the people hated him for his oppression, while the soldiery despised him for conduct considered base and unworthy of an emperor.

Conspiracy, Murder, and Political Lesson

Once Commodus had become both hated and despised, conspiracy against him became possible, and he was ultimately murdered. His hereditary right did not save him because succession could provide an entrance into power without guaranteeing the qualities needed to retain it. The fall demonstrates that legitimacy is a foundation, not a substitute for political judgment.

His case also forms part of a comparative argument about Roman emperors. Severus, although oppressive toward the people, survived because his strength of character and political skill kept the soldiers loyal and made him formidable to the population. Commodus attempted to purchase military support while lacking the disciplined authority that made Severus effective. The difference was not simply the use of harshness, but the ability to command respect rather than provoke contempt.

The broader lesson is that princes cannot safely imitate another ruler’s outward methods without possessing the qualities that made those methods work. The book groups Commodus with Caracalla and Maximinus as rulers for whom imitation of Severus proved fatal: they lacked the capacity to reproduce his success. Commodus’s hereditary inheritance should have enabled him to maintain the empire, but his cruelty, greed, theatrical degradation, and resulting isolation converted secure succession into violent overthrow.