**[On general councils] **
The frequent holding of general councils is a pre-eminent means of cultivating the Lord’s patrimony. It roots out the briars, thorns and thistles of heresies, errors and schisms, corrects deviations, reforms what is deformed and produces a richly fertile crop for the Lord’s vineyard. Neglect of councils, on the other hand, spreads and fosters the aforesaid evils. This conclusion is brought before our eyes by the memory of past times and reflection on the present situation. For this reason we establish, enact, decree and ordain, by a perpetual edict, that general councils shall be held henceforth in the following way. The first shall follow in five years immediately after the end of this council, the second in seven years immediately after the end of the next council, and thereafter they are to be held every ten years for ever. They are to be held in places which the supreme pontiff is bound to nominate and assign within a month before the end of each preceding council, with the approval and consent of the council, or which, in his default, the council itself is bound to nominate. Thus, by a certain continuity, there will always be either a council in existence or one expected within a given time. If perchance emergencies arise, the time may be shortened by the supreme pontiff, acting on the advice of his brothers, the cardinals of the Roman church, but it may never be prolonged. Moreover, he may not change the place assigned for the next council without evident necessity. If an emergency arises whereby it seems necessary to change the place–for example in the case of a siege, war, disease or the like–then the supreme pontiff may, with the consent and written endorsement of his aforesaid brothers or of two-thirds of them, substitute another place which is suitable and fairly near to the place previously assigned. It must, however, be within the same nation unless the same or a similar impediment exists throughout the nation. In the latter case he may summon the council to another suitable place which is nearby but within another nation, and the prelates and other persons who are customarily summoned to a council will be obliged to come to it as if it had been the place originally assigned. The supreme pontiff is bound to announce and publish the change of place or the shortening of time in a legal and solemn form within a year before the date assigned, so that the aforesaid persons may be able to meet and hold the council at the appointed time.