Domitian succeeded his older brother Titus as Roman emperor. In “The Life of Domitian,” Suetonius remarks on the emperor’s innovative approach to governing that granted the empire safety and peace. As an individual, he preferred to go it alone and was naturally suspicious of others, a trait which inevitably led to his downfall. The final of three Flavian emperors, Domitian is also the last entry in Suetonius’ The Twelve Caesars.