| The person of the God-man the principle of headship in the Church | [178] |
| Testimony of the Fathers to this | [179] |
| Fourfold unity resulting from this headship | [181] |
| First unity of mystical influx | [182] |
| The second unity of charity, whose efficient principle is the Holy Spirit. |
| —Third unity of faith, whose efficient principle is the Holy Spirit |
| acting through the visible hierarchy | [183] |
| Set forth by S. Paul also | [185] |
| Headship of mystical influx does not obviate the creation of an external |
| hierarchy | [188] |
| Fourth unity of visible headship.—This the root and efficient principle of |
| the visible hierarchy | [190] |
| The one body is complete | [192] |
| The unity of a college not sufficient to express our Lord's personal unity | [193] |
| Positive teaching corresponds to the inherent notion of the Church | [194] |
| The Father in the holy Trinity what Peter's see is in the Church | [195] |
| Summary of this fourfold unity | [196] |
| Importance of S. Peter's office hence resulting | [197] |