On this basic principle, which guarantees the sacred dignity of the individual, the Church constructs her social teaching. She has formulated, particularly over the past hundred years, and through the efforts of a very well informed body of priests and laymen, a social doctrine which points out with clarity the sure way to social reconstruction. The principles she gives are of universal application, for they take human nature into account, and the varying conditions in which man's life is lived. They also take into account the principal characteristics of contemporary society, and are thus acceptable to all.
But today, more than ever, it is essential that this doctrine be known, assimilated, and put into effect in the form and manner that the different situations allow and demand. It is a difficult task indeed, yet a most noble one. To the performance of it We call, not only Our own sons and brothers scattered throughout the world, but also men of goodwill everywhere.
First, We must reaffirm most strongly that this Catholic social doctrine is an integral part of the Christian conception of life.
It is therefore Our urgent desire that this doctrine be studied more and more. First of all it should be taught as part of the daily curriculum in Catholic schools of every kind, particularly seminaries, although We are not unaware that in some of these latter institutions, this has been done for a long time now and in an outstanding way. We would also like to see it added to the religious instruction programs of parishes and of Association of the Lay Apostolate. It must be spread by every modern means at our disposal: daily newspapers, periodicals, popular and scientific publications, radio and television.
Our beloved sons, the laity, can do much to help this diffusion of Catholic social doctrine by studying it themselves and putting it into practice, and by zealously striving to make others understand it.