A second text (titled "On the Ogdoad and Ennead") told of the Hermetic mystery schools. Rather than an ogdoad, a trinity is affirmed. As such, its properties form the origin of the "lotus variant" of the Ogdoad cosmogeny. Of the eight celestial beings of the "Ogdoad," four are peculiar to the Valentinian system. The other major creation traditions are the Memphite Tradition and Hermopolitian/Ogdoad. Beneath the Ogdoad is the Hebdomad presided over by its own archon. Over the Ogdoad is the Pleroma, the abode of the Aeons. An aspect within the Ogdoad is the Cosmic Egg, from which all things are born. Like the other Ogdoad deities, Nu did not have temples or any center of worship. The Valentinian Secundus divided the Ogdoad into a right-hand and a left-hand Tetrad (Iren.