Commentary Purg XXXI 45

The reference to the Sirens draws us back to [Purg XIX 19-33], the dream of the Siren and (as at least a few interpreters agree) Beatrice's intervention in Dante's dream to have Virgil show him the ugliness of the object of his infatuation.  See C.Purg.XIX.31-33.

      The Ottimo (DDP Ottimo.Purg.XXXI.43-47) is one of the very few commentators to think of Boethius's dismissal of the Sirens (who have so harmed him) in favor of the Muses of Lady Philosophy (Cons. I.i[pr]).