For the health of the Church it is therefore necessary to restore matters to their condition before the Pseudo-Isidorian Decretals, and to give to the episcopate its due authority. The main obstacle to this is not the pope himself, but the Curia, and this must be fought by all possible means, especially by thorough popular education (""), and by the assembling of national and provincial synods, the neglect of which is the main cause of the Church's woes. If the pope will not move in the matter, the princes, and notably the emperor, must act in co-operation with the bishops, summon national councils even against the popes will, defy his excommunication, and in the last resort refuse obedience in those matters over which the papacy has usurped jurisdiction.