63 It is clear, then, that virtue and learning are required, that there is need of example and of edification, need for the priest to spread on all sides, and to all who draw near him "the good odor of Christ." This need is today more keenly felt, and has become more evident and urgent. This is because of Catholic Action, that movement so consoling, which has within it the power to spur on to the very highest ideals of perfection. Through Catholic Action the relations of the laity with priests are becoming more frequent and more intimate. And in this collaboration, the laity quite naturally look upon the priest not merely as a guide, but as a model also of Christian life and of apostolic virtue.
Source: Ad Catholici Sacerdotii (Vatican.va)