Sentence:  Once the first principle starts to unfold into something other than itself, difference inevitably becomes uncontrollable, and that is why Valentinian <WSD>protologies</WSD> typically describe long chains of generation where the successful mediation of unity and duality is constantly being deferred from one level of being to the next: once the monad becomes a dyad it will multiply itself into a tetrad, an ogdoad and a triakontad, and the continued unity of the whole depends on the precarious unity of each of its constituent aeons, they themselves being "syzygies", double beings consisting of a masculine and feminine component, one but at the same time two. 
Meaning of the word marked with <WSD> tags:  A text or oral history giving the origins of a people.