8 But We shall not, Venerable Brothers, delay Ourselves too long on these questions; Our object is here, before all, to bring to light the character, and, as one says the particular spirit of the third Order, for the Church expects from it special advantages for the Christian people in this age, as hostile to virtue and to faith as was the epoch of Francis of Assisi. With his profound sense of situations and times Our predecessor, Leo XIII, of happy memory, desirous to adapt better the regulation of life of the Tertiaries to the social level of each of the faithful, brought, by the Constitution "Misericors Dei Filius" (1883) to, their statutes or rule most wise motivations which should put them in accord with the actual state of society; he modified it in some secondary points responding but imperfectly to our customs of today.
Source: Sacra Propediem (Vatican.va)