Being hypderdox myself, it is fair to mention that St. Augustine of Hippo did correct many of his errors in his later 'Retractions' book and that most of his writings may have been misinterpreted and used in a way different than what he originally meant by Anselm's interpretation of them. Other than that, he still was a great man who loved the Church more than anything and is an inspiration to me; even if he made theological errors all the time.
Anyway, what would you gents say is the most complex, largest most confusing book/volume in all of the Orthodox Church? I think I know but I cannot remember the name of it. No, not scripture.