The essential features of the One (goodness, unity) are visible in each creature. If the one were of the same value as the rest of being, then cosmic harmony and its order would fail; furthermore, it would not be possible to distinguish between the first and the last in the series (Petrizi, Opera II, prop. 1, p. 13). The universe would thus have no first and no last reference point, no origin and no unities following it. It is precisely on the impossibility of such an assumption that Petrizi’s ontological reflections were based. In Petrizi’s view, the One is identical with the Good. All Being presupposes the first Good because all creatures of nature participate in this good and only possess good qualities by virtue of their participation. Being is not by its own nature the Good, but becomes a Good subsequently, by participation in the One. Therefore, in Petrizi’s view a distinction must be made between the Good in itself and good entities inasmuch as the former is above all nature and is a pure good in itself. Therefore, it is also the goal of all Being, which constantly strives for it inasmuch as each caused thing reverts to the cause (Petrizi, Opera II, prop. 8, p. 33).