First, an interesting (if problematic) assessment of the Cathar heresy and the basic dualist impulse one often senses in people confronted with the theodicy — the paradox of evil in a world created by a good deity, by Hilaire Belloc.
Second, an interesting snippet on Neoplatonism at Wikipedia which, far from incomplete, refreshes my memory and makes it clear to me why Pound was so into Plethon and Psellus and the rest of this lot.
Lastly, an essay I’ve seen around before, but one which points out some interesting facts regarding the relationship between Ezra Pound and the Occult, a subject of particular interest for me, as I consider him quite mad.