The dyad gets its name from passing through or asunder; for the dyad is the first to have separated itself from the monad, whence also it is called "daring." For when the monad manifests unification, the dyad steals in and manifests separation.
IamblichusThe Triad has a special beauty and fairness beyond all numbers, primarily because it is the very first to make actual the potentiality of the Monad - oddness, perfection, proportionality, unification, limit.
Iamblichus'Perfect justice rules the world' for the Powers that are superior to us know the whole life of the Soul and all its' former lives.
IamblichusAll things in the world of Nature are not controlled by Fate for the soul has a principle of its own.
Iamblichus