| 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 |
