Jonathan Mayhew often puts thing wonderfully succinctly. Here's a recent comment of his that I can wholeheartedly affirm, from a post on Lorca and "symbols":
"I don't see poetry as a process of encoding ideas in symbols that the reader then must decode. I understand why anyone who is taught that this is what poetry is might grow up to hate poetry."
As I quoted Lorca a few days ago: "I'll let you know what I see there. Just don't ask me to explain it."