At one time it would have been taken for granted that the Church—whose business is to guide and form the profound aspects of man’s being—would also have something to say about his mundane economic activities. Unfortunately, this is no longer the case. Men today are trained to imagine various compartments in life: one “personal” and one “spiritual,” one “recreational” and one “professional,” one “public” and one “private.” As a result the Church and the State, and even more so the Church and “the market,” are cordoned off and told they have nothing to say about one another. Thus, we find ourselves reduced to a position from which we must justify the very existence of the doctrines we are about to explore. Before we can say what the Church teaches about economic and political life, we must convince the reader of Church’s right to have any opinion whatsoever in these matters. Fortunately the task is not difficult.