From workers’ rights to care for the earth, Catholic social teaching has been asking the same question for 135 years: what does the human person deserve?
Catholic social teaching is one of the richest and least-read bodies of thought the Church has produced. Most Catholics have heard the term; far fewer have spent time with the actual documents — the encyclicals, apostolic letters, and papal addresses that have been developing the tradition since 1891. Those who do read them tend to come away with the same reaction: this is more complex, more demanding, and more interesting than they expected. It does not confirm what they already believed. It asks them to think harder.
The reason is simple. Catholic social teaching is not a political program. It does not map onto the left-right spectrum — not because it is timid or evasive, but because it begins from a place that neither contemporary liberalism nor contemporary conservatism fully occupies: the conviction that the human person has an inviolable dignity, given by God, that precedes and supersedes every political arrangement. From that single starting point, conclusions follow that will make almost everyone uncomfortable at some point.
The tradition defends private property — and insists that property carries a social mortgage, that the goods of the earth are destined for all, and that the accumulation of wealth at the expense of the poor is a grave moral disorder. Rerum Novarum (1891) defended workers’ right to just wages and safe conditions and affirmed the legitimacy of labor unions. The same document defended the right to private property against socialist redistribution and insisted that the state cannot absorb all social life into itself. Both are there. Neither cancels the other.
The tradition insists on solidarity — the recognition that we are responsible for one another, that the suffering of the poor is not someone else’s problem, and that a society which abandons its weakest members has failed at something fundamental. The same tradition insists on subsidiarity — the principle that decisions should be made at the most local level possible, that larger institutions should not absorb what smaller ones can handle, and that the state is not the primary agent of the common good. Both principles are equally central, and they exist in creative tension rather than contradiction.
The tradition defends the unborn and insists on the sanctity of human life from conception to natural death. It also insists on the dignity of migrants and refugees, the obligation to welcome the stranger, the moral imperative of reducing inequality between nations, and the duty to care for the earth as a common home. Leo XIV's Magnifica Humanitas contains all of these simultaneously, as every major document in the tradition has. So did Francis's Laudato Si'. So did John Paul II’s Centesimus Annus. The consistency is not accidental — it flows from a single source.
That source is an understanding of the human person that neither contemporary left nor contemporary right fully shares. The secular left tends to reduce the person to a bearer of rights, abstractly equal, whose community and relationships are secondary to individual autonomy. The secular right tends to reduce the person to an economic actor whose freedom is primarily the freedom to acquire. Catholic social teaching insists that the person is neither. We are relational beings, made for community and for God, whose dignity is inalienable and whose flourishing requires both freedom and solidarity, both personal responsibility and structural justice.
This is why the Compendium of the Social Doctrine of the Church runs to 583 paragraphs. The tradition is not a slogan. It is a sustained attempt, developed over 135 years and across radically different historical contexts, to think seriously about what a society worthy of the human person would look like. It has been surprising readers on both sides of every argument since 1891, and it will surely go on doing so.
