9. But if any one is compelled, so that union may be preserved, to renounce his own private opinion, let him do it cheerfully for the common good. Catholic writers must spare no effort to preserve this harmony in all things; let them prefer that which is of general utility to their own private interests. Let them favour common action; let them willingly submit to those "whom the Holy Ghost has set as Bishops to rule over the Church of God;" let them respect their authority and never undertake anything against the will of those they should look on as their leaders in the battle for Catholic interests.