relations (paternity, filiation, spiration—active and passive) constitute the persons as such. It is for this reason that the operations ad intra are said to be divisible, namely that the relations establish the processions. The identity and personhood of each person are constituted by the relations each has with the other persons. In fact, these are nothing but those subsistent relations, since everything else is shared. But the persons must be constituted in their plenary perfection apart from