At the most fundamental level, the Monad is the Primordial One and the Indefinite Dyad is Primordial Matter, because Prima Materia is the indeterminate, formless, quality-less foundation of all being; She is Sub-stance — She who stands underneath. Like the One, Primordial Matter is ineffable, obscure, dark; therefore They are both called Abyss. Thus, the Goddess of Matter is also called Silence (Sigê), because Silence must precede the Word, the in-forming Logos, embodying the Ideas of the Craftsman. Her role as Mediator between the Father of the Gods and the Demiurge is confirmed by the Chaldean Oracles:
between the Fathers is Hekate’s Center borne.
-John Opsopaus, from A Summary of Pythagorean Theology
Reditus 