Burrus

• burro (spa) donkey, ass. used figuratively as well to refer to something that is not very bright (synonym of 'tonto'), and as a petty insult in gral.
• Burrus, Sextus Afranius [1] (1 - 62), Praetorian prefect, was advisor to Roman Emperor Nero and, together with Seneca the Younger, very powerful in the early years of Nero's reign.

As stated here [2] , the seemingly maieutic tone of the speaker may echo and parody E. Pound's beliefs and style and specially the beginning of his 'Canto XXI'

     Keep the peace, Borso! " Where are we?
         "Keep on with the business
                                      That's made me"