It is accepted that Juvenal is the author of the 16 "Satires" (They are divided into five books). This "Satires" are about the vices of the Roman world (the unnatural vices, the misery of poverty and the extravagance of the ruling classes). His influence on English poetry is best seen in Johnson's poems ‘London’ and ‘The Vanity of Human Wishes’, while Dryden's versions of five of Juvenal's satires are among the best of his works. 
- Sed quis custodiet ipsos custodes ?
- Who will guard the guards themselves?