 Now for the payoff. Abelard deploys his theory of identity to shed light on the Trinity as follows. The three Persons are essentially the same as one another, since they are all the same concrete thing (namely God). They differ from one another in definition, since what it is to be the Father is not the same as what it is to be the Son or what it is to be the Holy Spirit. The three Persons are numerically different from one another, for otherwise they would not be three, but they are not numerically different from God: if they were there would be three gods, not one. Moreover, each Person has properties that uniquely apply to it—unbegotten to the Father, begotten to the Son, and proceeding to the Holy Spirit—as well as properties that are distinctive of it, such as power for the Father, wisdom for the Son, and goodness for the Holy Spirit. The unique properties are unmixed in Abelard’s technical sense, for the Persons differ from one another in their unique properties, and such properties do not apply to God; the distinctive properties are mixed, though, in that God is characterized by each (the powerful God is the wise God is the good God). Further than that, Abelard holds, human reason cannot go; but reason validates the analysis (strictly speaking only a “likeness” or analogy) as far as it can go.