If it were to be claimed that intentional verse is not yet poetry, then I would equally have the right to claim that the most consummate, most differentiated sound poems are no longer poetry but a singular imitation of another art: music or declamation.

Allowing for all the restrictions involved when trying to rank individual artists by using general criteria, we have to say it is a measure of inscrutability and hardness, mostly already perceptible in their craftsmanship, an elusive asceticism, a stubbornness which manifests itself most clearly in a total lack of accommodation to public taste.