Though liberalism is often discussed as a single political theory, there are in fact two basic forms of liberalism and the distinction between them is of great importance. Both argue against the legal enforcement of private morality—both argue against the Moral Majority’s views of homosexuality and abortion, for example—and both argue for greater sexual, political, and economic equality. But they disagree about which of these two traditional liberal values is fundamental and which derivative. Liberalism based on neutrality takes as fundamental the idea that government must not take sides on moral issues, and it supports only such egalitarian measures as can be shown to be the result of that principle. Liberalism based on equality takes as fundamental that government treat its citizens as equals, and insists on moral neutrality only to the degree that equality requires it.
The difference between these two versions of liberalism is crucial because both the content and appeal of liberal theory depends on which of these two values is understood to be its proper ground. Liberalism based on neutrality finds its most natural defense in some form of moral skepticism, and this makes it vulnerable to the charge that liberalism is a negative theory for uncommitted people. Moreover it offers no effective argument against utilitarian and other contemporary justifications for economic inequality, and therefore provides no philosophical support for those who are appalled at his administration’s economic program. Liberalism based on equality suffers from neither of these defects. It rests on a positive commitment to an egalitarian morality, and provides, in that morality, a firm contrast to the economics of privilege.
In this essay I shall set out what I believe are the main principles of liberalism based on equality.1 This form of liberalism insists that government must treat people as equals in the following sense. It must impose no sacrifice or constraint on any citizen in virtue of an argument that the citizen could not accept without abandoning his sense of his equal worth. This abstract principle requires liberals to oppose the moralism of the New Right, because no self-respecting person who believes that a particular way to live is most valuable for him can accept that this way of life is base or degrading. No self-respecting atheist can agree that a community in which religion is mandatory is for that reason finer, and no one who is homosexual that the eradication of homosexuality makes the community purer.
So liberalism as based on equality justifies the traditional liberal principle that government should not enforce private morality of this sort. But it has, of course, an economic as well as a social dimension. It insists on an economic system in which no citizen has less than an equal share of the community’s resources just in order that others may have more of what he lacks. I do not mean that liberalism insists on what is often called “equality of result,” that is, that citizens must each have the same wealth at every…
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