This source of all being is an Aeon in which an inner being dwells, known as Ennoea ("thought, intent", Greek ἔννοια), Charis ("grace", Greek χάρις), or Sige ("silence", Greek σιγή). These are the primary roots of the Aeons. The split perfect being conceives the second Aeon, Caen ("power"), within itself. Along with the male Caen comes the female Aeon, Akhana ("love"). Complex hierarchies of Aeons are thus produced, sometimes to the number of thirty. These Aeons belong to the purely ideal, noumenal, intelligible, or supersensible world; they are immaterial, they are hypostatic ideas. Together with the source from which they emanate they form the Pleroma ("region of light", Greek πλήρωμα). The lowest regions of the Pleroma are closest to the darkness—that is, the physical world.