As with everything else, there were good and bad Roman emperors. The good, like Trajan (98-117), Hadrian (117-138), Antoninus Pius (138-161) and Marcus Aurelius (161-180) were largely civilized and civilizing. The bad, on the other hand, were sometimes nothing less than monsters, exhibiting varying degrees of corruption, cruelty, depravity and insanity. It is a sobering thought that these ogres were responsible for governing the greatest civilization...