Poetry seems to sink into us the way prose doesn't. I can still quote verses I learned when I was very young, but I have trouble remembering one line of a novel I just finished reading.
And New York is the most beautiful city in the world? It is not far from it. No urban night is like the night there... Squares after squares of flame, set up and cut into the aether. Here is our poetry, for we have pulled down the stars to our will.
A book is sent out into the world, and there is no way of fully anticipating the responses it will elicit. Consider the responses called forth by the Bible, Homer, Shakespeare - let alone contemporary poetry or a modern novel.
Art works because it appeals to certain faculties of the mind. Music depends on details of the auditory system, painting and sculpture on the visual system. Poetry and literature depend on language.