Chaldean Oracles
Monad. Dyad. Triad.
And beside Him is seated the Dyad which glitters with intellectual sections, to govern all things and to order everything not ordered.
The Mind of the Father said that all things should be cut into Three, whose Will assented, and immediately all things were so divided.
From thence floweth forth the Form of the Triad, being preexistent; not the first Essence, but that whereby all things are measured.
The First Course is Sacred, in the middle lace courses the Sun, [1] in the third the Earth is heated by the internal fire.