“one” signifies the substance of the three, their essence, their absolute simplicity whereby they are one and for whom “there is no possibility of … perfection growing.”24 Or, to make the same point differently, “So they are each in each and all in each, and each in all and all in all, and all are one.”25 All three are by way of being. Accordingly, substance or essence is not spoken of them relatively: again, they are one. With respect to being—which is, of course, common—each is. Each is the fullness