18th-century historian Edward Gibbon, author of "The History of the Decline and Fall of the Roman Empire", takes Caracalla's reputation, which he had received for the murder of Geta and subsequent massacre of Geta's supporters, and applied it to Caracalla's provincial tours, suggesting that "every province was by turn the scene of his rapine and cruelty". Gibbon compared Caracalla to emperors such as Hadrian who spent their careers campaigning in the provinces and then to tyrants such as Nero and Domitian whose entire reigns were confined to Rome and whose actions only impacted upon the senatorial and equestrian classes residing there. Gibbon then concluded that Caracalla was "the common enemy of mankind", as both Romans and provincials alike were subject to "his rapine and cruelty".