21 In order to renew and increase in all the Catholic works necessary enthusiasm; in order to offer an occasion for the promoters and members of these works to see each other and become better acquainted; in order to strengthen the bond of charity, to inspire one another with a great zeal for fruitful activity, and to provide for the greater solidity and propagation of the works themselves, it will be very useful from time to time to hold general and particular Congresses of Italian Catholics, according to the norms already laid down by this Holy See. These Congresses, however, must be a solemn manifestation of the Catholic Faith and a festival of mutual harmony and peace.
Source: Il Fermo Proposito (Vatican.va)