My favorite passage from Milton's Paradise Lost. Adam asks the Archangel Raphael to reveal more "Secrets of Another World", and to further explain heaven to a man. Raphael warns that the knowledge Adam seeks is inaccessible, that it "surmounts the reach of human sense." Instead, like Milton (and all great poets), Raphael offers to employ the language of metaphor to express the inexplicable. As he admits in the final lines, Earth and Heaven may not be so different after all.