Believe it or not but Crowley was one of the more intellectual spiritual people the 3rd density has ever seen.
Only problem is that he wasn't capable of maintaining his sanity when exposed to what he knew as 'occult magic'. It's unfortunate that in his confusion he made some mistakes regarding his physical activities while on this planet which would cause him to break mentally as well as not maintaining his mind/body/spirit in a unifies form for his ascension.