Mater et Magistra §168

¹⁶⁸ Increase in production and productive efficiency is, of course, sound policy, and indeed a vital necessity. However, it is no less necessary—and justice itself demands—that the riches produced be distributed fairly among all members of the political community. This means that everything must be done to ensure that social progress keeps pace with economic progress. Again, every sector of the economy—agriculture, industry and the services—must progress evenly and simultaneously.