Proclus

The last great head of the Academy at Athens, and its most relentless systematizer — the Elements of Theology proves 211 propositions in geometric order, like Euclid for the divine. His crucial move is the henads: a rank of plural divine unities standing between the utterly simple One and the Intellect, each a whole god, each participating the One differently. A structured plurality of divine powers, mediating an unknowable source — the closest thing in Greek philosophy to a doctrine of sephirot, three centuries before anyone wrote of the Tree.