Wallace Stevens on explaining a poem

...things that have their origin in the imagination or in the emotions very often take on a form that is ambiguous or uncertain. It is not possible to attach a single, rational meaning to such things without destroying the imaginative or emotional ambiguity or uncertainty that is inherent in them and that is why poets do not like to explain. That the meanings given by others are sometimes meanings not intended by the poet or that were never present in his mind does not impair them as meanings.