How to Think About the Common Good: A Philosophical Guide

What Is the Common Good?

The common good refers to the shared conditions and goods that are beneficial to all members of a community. These include public goods like clean air and water, infrastructure, and public health; social institutions like the legal system, education, and democratic governance; and the cultural and moral conditions that enable human flourishing, such as social trust, mutual respect, and civic solidarity.

The concept of the common good is central to political philosophy. It represents the idea that political communities are not merely collections of individuals pursuing their private interests but associations of persons who share a common life and common purposes. The question of the common good — what it is, how to identify it, and how to pursue it — is one of the fundamental questions of political philosophy.

The Classical Tradition: Aristotle

The classical philosophical foundation for the concept of the common good is found in the work of Aristotle. In the Politics and the Nicomachean Ethics, Aristotle argued that the polis (political community) exists for the sake of the good life, not merely for the sake of living. The purpose of political association is not simply to provide security and facilitate economic exchange but to enable human beings to live well and to flourish.

For Aristotle, the common good is not simply the sum of individual goods but a distinct good that is realized through shared political life. The virtuous citizen is one who is able to deliberate about the common good and to act for the sake of it. The best constitution is one that enables all citizens to participate in the pursuit of the common good.

The Republican Tradition

The republican tradition, from Cicero to Machiavelli to Jean-Jacques Rousseau, has emphasized the importance of the common good for political freedom. In the republican tradition, freedom is understood not as the absence of interference but as the absence of domination — the condition of not being subject to the arbitrary will of another.

The common good, in the republican tradition, is the condition of non-domination that is realized through the rule of law, the separation of powers, and the active participation of citizens in political life. The republic is a political community in which citizens are free because they are governed by laws that they have given to themselves and that serve the common good.

The Liberal Critique

The liberal tradition has been more skeptical of the concept of the common good. John Rawls argued that in a pluralistic society, citizens disagree about the nature of the good life, and the state should not favor any particular conception of the good. The role of the state, on Rawls's view, is not to promote the common good but to maintain a just framework within which individuals can pursue their own conceptions of the good.

Rawls's "political liberalism" represents an attempt to reconcile the liberal commitment to individual freedom with the republican concern for the common good. The principles of justice that Rawls defends — equal basic liberties, fair equality of opportunity, and the difference principle — are the terms of fair cooperation that free and equal citizens can accept. These principles define the common good of a just society.

The Communitarian Critique

The communitarian tradition, represented by thinkers like Alasdair MacIntyre, Charles Taylor, and Michael Sandel, has argued that the liberal emphasis on individual rights and neutrality has obscured the importance of the common good. MacIntyre argued that the Enlightenment project of justifying morality on the basis of universal reason has failed, and that we must return to the Aristotelian tradition of virtue ethics embedded in particular communities.

Sandel has argued that the liberal conception of the self as a "free and independent self" is inadequate because it ignores the way in which our identities are constituted by our membership in communities. A just society, Sandel argues, must be concerned not only with the fair distribution of resources but also with the cultivation of the virtues and commitments that sustain a shared political life.

Thinking About the Common Good Today

How should we think about the common good in contemporary pluralistic societies? The challenge is to find a conception of the common good that is compatible with the diversity of modern societies while still providing a basis for shared political life. This requires that we distinguish between the common good as a set of substantive ends and the common good as the fair terms of cooperation that enable diverse individuals and groups to live together in a just society.