"The Monad is like a seed in containing within itself the unformed and unarticulated principle of every number, the Dyad is a small advance towards Number, but is not Number outright because it is like a source; but the Triad causes the principle of the Monad to advance into actuality and extension. 'This' belongs to Monad, 'either' to Dyad, and 'each/every' to the Triad."