What message might Edgar Allan Poe want to convey in “The Dall of the House of Usher?”

Edgar Allan Poe might be passing on a moral message by creating an emotional tone in “The Dall of the House of Usher.” He has put a specific emphasis on fear, looming doom and guilt around Roderick Usher, who is suffering from an unknown disease. The reader is made wary of despair and the gloom insider Usher twins and their death.