AA 31 says it. Lay people should be well-formed for the task of evangelization and bringing other people to holiness. Note this is a lay responsibility that begins with the simplest of interactions: conversation.
(T)he laity must be specially formed to engage in conversation with others, believers, or non-believers, in order to manifest Christ’s message to all …
Materialism was someone’s bugaboo, but in today’s thinking it could just as well have been expressed by the godless culture of the West:
Since in our times, different forms of materialism are spread far and wide even among Catholic, the laity should not only learn doctrine more diligently, especially those main points which are the subjects of controversy, but should also exhibit the witness of an evangelical life in contrast to all forms of materialism.
Lay training in values, for we need to know
… the true meaning and value of temporal things, both in themselves and in relation to all the aims of the human person. (We) should be trained in the right use of things and the organization of institutions, attentive always to the common good in line with the principles of the moral and social teaching of the Church. (We) should above all learn the principles and conclusions of the social doctrine so as to become capable of working for the development of this doctrine to the best of (our) ability and of rightly applying these same principles and conclusions to individual cases.
Nice. An eye to the common good, a head full of social justice. Dorothy must have been pleased. Form lay people from “childhood on” in compassion and generosity the section concludes.
Many families and parishes are doing a good job along the social justice lines. Conversation lags behind, though one might argue actions speak louder than words. The corollary might be that preaching speaks most softly of all.