142 It is not possible to determine a priori what the structure of farm life should be, since rural conditions vary so much from place to place and from country to country throughout the world. But if we hold to a human and Christian concept of man and the family, we are bound to consider as an ideal that form of enterprise which is modelled on the basis of a community of persons working together for the advancement of their mutual interests in accordance with the principles of justice and Christian teaching. We are bound above all to consider as an ideal the kind of farm which is owned and managed by the family. Every effort must be made in the prevailing circumstances to give effective encouragement to farming enterprises of this nature.
Source: Mater et Magistra (Vatican.va)