There is a bumper sticker that says, "If you want peace, then work for justice." At a superficial level, this simple slogan contains an important half-truth. At a deeper level, it contains a more profound half-truth. To understand these half-truths and why they are only half true, we need to know what peace is, what justice is, and we need to understand the relationship between the two. So in this talk I want to explore the meanings of peace and justice, their relationship, and the role of economic reform in attaining both.

"If you want peace, then work for justice." The more obvious and superficial meaning of this slogan is that people who are treated unjustly will prevent the attainment of peace until the wrongs to which they are subject are righted. Demonstrators shout: "No justice. No peace." The apparent meaning of peace in this case is tranquility, the absence of strife. And if this meaning of peace is accepted, the slogan is true. You cannot expect to end strife as long as people have unresolved grievances. But the reason that this is only half true is that this meaning is only a shadow of what peace really is.

Peace is more than armistice, more than the cessation of violence. Peace is unity and harmony. In a peaceful world people are all pleased to cooperate with one another. When we have attained true peace, there will be no person who has any purpose that any other person seeks to thwart. In a peaceful world, everyone will feel the truth of John Donne's meditation,

No man is an Island entire of itself; every man is a piece of the Continent; a part of the main; if a clod be washed away by the sea, Europe is the less, and well as if a promontory were, as well as if a manor of thy friends or of thine own were; any man's death diminishes me because I am involved in Mankind; therefore never send to know for whom the bell tolls; it tolls for thee.[1]

Is it imaginable that we might ever attain a world where everyone felt so? And if we do so, what will be the role of justice in that world? What is justice?

There are so many conflicting, strident claims for different conceptions of justice that a person might reasonably despair of ever finding a meaning of justice that people would agree upon. Any conception of justice may seem to be no more than one person's opinion. And yet there are things that we all know about justice. ...

If we commit ourselves to neutrality, does that provide a unique definition of justice? No, it doesn't. There are a number of definitions of justice that might claim to satisfy neutrality, although the claims of some definitions are dubious, and other definitions can be rejected on other grounds.

This is a reasonable recipe for implementing the Golden Rule and a fine idea for seeking agreement about the principles by which complaints shall be judged. If people were to follow this suggestion and achieve the agreement that is described, they would achieve fairness.

Next, consider egalitarianism. The egalitarian says that justice is equality. There is a conceptual difficulty in specifying how beings as different from each other as humans are could ever be equal, unless we create a society where all humans are female clones of one another. (This should be technologically feasible within a few decades, if it is not already.) But I do not think that egalitarians want a society of clones. ...

From the perspective of peace, no man is an island; each of us is a part of mankind. And any of us who has been graced with an extra measure of talent should recognize that, often, the best use of our talent is to provide for others. Nevertheless, from the perspective of justice, each of us must be allowed to act like an island if he wishes. ...

But I don't think you would. I don't think anyone would. We are not egalitarians. We recognize the sanctity of the boundaries of the human body. In a peaceful world I will gladly give a spare kidney to anyone who needs it. But in a just world, no one will forcefully extract a kidney from me, even to save someone else's life. Justice is not egalitarianism.

A proper definition of justice begins with the principles of classical liberalism. In a just world each person is permitted to determine the purposes to which his or her body is put--the hands and the brain no less than the kidneys. We each have rights of self-determination. This includes the right of ownership of what we produce, at least, as John Locke said, when we leave as much in natural opportunities for others as we appropriate for our own productive activities.[11]

We have the right to co-operate with whom we choose for whatever mutually agreed purposes we choose. Thus we have the right to trade with others, without any artificial hindrances, and we have the right to keep any wages or interest that we receive from such trading.

These components of the classical liberal conception of justice are held by two groups that hold conflicting views on a companion issue of great importance: how are claims of exclusive access to natural opportunities to be established?

The other tradition is that of the "geoists," as inspired if not exemplified by Henry George, who say that, whenever natural opportunities are scarce, each person has an obligation to ensure that the per capita value of the natural opportunities that he leaves for others is as great as the value of the natural opportunities that he claims for himself.[14] Any excess in one's claim generates an obligation to compensate those who thereby have less. George actually proposed the nearly equivalent idea, that all or nearly all of the rental value of land should be collected in taxes, and all other taxes should be abolished. The geoist position as I have expressed it emphasizes the idea that, at least when value generated by public services is not an issue, rights to land are fundamentally rights of individuals, not rights of governments.

The second fundamental problem with the position of the homesteading libertarians is that, even if there were previously unsettled land to be allocated, say a new continent emerging from the ocean, first grabbing would make no sense as a criterion for allocating land.

It would be inefficient, for one thing, as people stampeded to do whatever was necessary to establish their claims. But that is not decisive because, if we are concerned with justice, it might be necessary for us to tolerate inefficiency. But the homesteading libertarian view makes no sense in terms of justice. "I get it all because I got here first," isn't justice.

So if you want a peace for others, then work for justice. Work for freedom. Work for the elimination of all taxes on the productive things that people do. Work for equality in the right to benefit from natural opportunities. All these things will make it easier for people to make the leap to peace.

Nic Tideman: Improving Efficiency and Preventing Exploitation in Taxing and Spending Decisions

• A third possible justification of public spending is egalitarianism: People should be required to provide as much for others as they have themselves. This theory suffers from the difficulties of vagueness and questionable operationality. As much what? There is no way to ensure that all persons will have equal quantities of such valued things as affection, talent or self-confidence. It is possible to imagine a crude egalitarianism of goods, but only by eliminating all incentives to be productive. If equality is traded off against some other goal, then egalitarianism is no longer the first principle.

Rawls manages to retain the primacy of egalitarianism without destroying all incentives to be productive by the maximin rule: Laws should be designed to maximize the well-being of the least advantaged person. This formulation, however, generates such anomalies as the following: If there are three persons, and the choice is either a distribution of $10,000, $12,000 and $50,0000, or a distribution of $10,001, $10,002 and $80,000, the maximin rule will select the latter, despite the fact that it makes the middle income person, who is already relatively poor, even poorer while making the richest person noticeably richer. In Rawls's particular formulation there is a further difficulty. He makes the maximin rule lexically subordinate to the rule that all persons should have the maximum individual liberty that all can have. However, he does not deal with the following problem: My individual liberty will be unnecessarily restricted if I am not allowed to sing you a song in exchange for a haircut (without being taxed), but if I am allowed to do so without being taxed, the maximin rule is not satisfied. If Rawls really does mean to put individual liberty lexically first, no redistributive income taxes would be permitted. ... read the whole article