So important to Neoplatonism did this term seem to Proclus, that he did not hesitate to say that Plutarch, by the use thereof, became "our first forefather." He therefore develops it further. Among the hidden and intelligible gods are three hypostases. The first is characterized by the Good; it thinks the Good itself, and dwells with the paternal Monad. The second is characterized by knowledge, and resides in the first thought; while the third is characterized by beauty, and dwells with the most beautiful of the intelligible. They are the causes from which proceed three monads which are self-existent but under the form of a unity, and as in a germ, in their cause. Where they manifest, they take a distinct form: faith, truth, and love (Cousin's title: "Du Vrai, du Beau, et du Bien"). This trinity pervades all the divine worlds. In order to understand the attitude of Plotinos on the subject, we must try to put ourselves in his position. In the first place, on Porphyry's own admission, he had added to Platonism Peripatetic and Stoic views. From Aristotle his chief borrowings were the categories of form and matter, and the distinction between potentiality and actuality,[488] as well as the Aristotelian psychology of various souls. To the Stoics he was drawn by their monism, which led him to drop the traditional Academico-Stoic feud, or rather to take the side of the Stoics against Numenius the Platonist dualist and the dualistic successors, the Gnostics. But there was a difference between the Stoics and Plotinos. The Stoics assimilated spirit to matter, while Plotinos, reminiscent of Plato, preferred to assimilate matter to spirit. Still, he used their terminology, and categories, including the conception of a hypostasis, or form of existence. With this equipment, he held to the traditional Platonic trinity of the "Letters," the King, the intellect, and the soul. Philosophically, however, he had received from Numenius the inheritance of a double name of the Divinity, Being and Essence. As a thinker, he was therefore forced to accommodate Numenius to Plato, and by adding to Numenius's name of the divinity, to complete Numenius's theology by Numenius's own cosmology. This then he did by adding as third hypostasis the Aristotelian dynamic energy. But as Intellect is permanent, how can Energy arise therefrom? Here this eternal puzzle is solved by distinguishing energy into indwelling and out-flowing. As indwelling, Energy constitutes Intellect; but its energetic nature could not be demonstrated except by out-flowing, which produces a distinction.