21 It is easy to understand what immense advantages must have flowed from an institution of this kind, as salutary in itself as it was admirably adapted to the times. That it was opportune is sufficiently established by the foundation of so many similar associations which issued from the family of St. Dominic and from the other Religious Orders, and by the facts themselves of history. In fact, from the lowest ranks to the highest, there prevailed an enthusiasm and a generous and eager ardour to be affiliated to this Franciscan Order. Amongst others, King Louis IX, of France, and St. Elizabeth of Hungary, sought this honour; and, in the course of centuries, several Sovereign Pontiffs, Cardinals, Bishops, Kings, and Princes have not deemed the Franciscan badges derogatory to their dignity. The associates of the Third Order displayed always as much courage as piety in the defence of the Catholic religion; and if their virtues were objects of hatred to the wicked, they never lacked the approbation of the good and wise, which is the greatest and only desirable honour. More than this, Our Predecessor, Gregory IX, publicly praised their faith and courage; nor did he hesitate to shelter them with his authority, and to call them, as a mark of honour, " Soldiers of Christ, new Maccabees ;" and deservedly so. For the public welfare found a powerful safeguard in that body of men who, guided by the virtues and rules of their founder, applied themselves to revive Christian morality as far as lay in their pourer and to restore it to its ancient place of honour in the State. Certain it is, that to them and their example it was often due that the rivalries of parties were quenched or softened, arms were torn from the furious hands that grasped them, the causes of litigation and dispute were suppressed, consolation was brought to the poor and the abandoned; and luxury, that gulf of fortunes and instrument of corruption, was subdued. And thus domestic peace, incorrupt morality, gentleness of behaviour, the legitimate use and preservation of private wealth, civilization and social stability, spring as from a root from the Franciscan Third Order; and it is in great measure to St. Francis that Europe owes their preservation.
Source: Auspicato Concessum (Vatican.va)