Pope John XXIII
Mater et Magistra §79
Mater et Magistra: On Christianity and Social Progress
79 What are these demands? On the national level they include: employment of the greatest possible number of workers; care lest privileged classes arise, even among the workers; maintenance of equilibrium between wages and prices; the need to make goods and services accessible to the greatest number; elimination, or at least the restriction, of inequalities in the various branches of the economy—that is, between agriculture, industry and services; creation of a proper balance between economic expansion and the development of social services, especially through the activity of public authorities; the best possible adjustment of the means of production to the progress of science and technology; seeing to it that the benefits which make possible a more human way of life will be available not merely to the present generation but to the coming generations as well.
Source: Mater et Magistra (Vatican.va)