When we speak of the common good, we need also to be clear-minded about the political and juridical institutions that are most likely to bring it about. These happen to be the very institutions that socialists have worked so hard to discredit. Let me list them: private property in the means of production; stable money to serve as a means of exchange; the freedom of enterprise that allows people to start businesses; the free association of workers that permits people to choose where they would like to work and under what conditions; the enforcement of contracts that provides institutional support for the idea that people should keep their promises; and a vibrant trade within and among nations to permit the fullest possible flowering of the division of labor. These institutions must be supported by a cultural infrastructure that respects private property, regards the human person as possessing an inherent dignity, and confers its first loyalty to transcendent authority over civil authority. This is the basis of freedom, without which the common good is unreachable. Thus Pope John Paul II wrote of economic initiative:
It is a right which is important not only for the individual but also for the common good. Experience shows us that the denial of this right, or its limitation in the name of an alleged “equality” of everyone in society, diminishes, or in practice absolutely destroys, the spirit of initiative, that is to say the creative subjectivity of the citizen.
To summarize: We are all entitled to call ourselves socialist, if by the term we mean that we are devoted to the early socialist goal of the well-being of all members of society. Reason and experience make clear that the means to achieve this is not through central planning by the state, but through political and economic freedom. Thomas Aquinas had an axiom: bonum est diffusivum sui. “The good pours itself out.” The good of freedom has indeed poured itself out to the benefit of humanity.