I’m pretty sure this is true
<span>Edgar Allan Poe's view on poetry is that all poems must be a "rhythmical creation of beauty". In his eyes, melancholy and sadness is beautiful. He thinks that the death of a young beautiful woman is itself full of beauty. I hope this helps.</span>
A. To give credit to the source. This is the most important reason to cite.
Have a nice day. Kind regards.