Abstract

The puzzle arises because propositions of law seem to be descriptive—they are about how things are in the law, not about how they should be—and yet it has proved extremely difficult to say exactly what it is that they describe. Legal positivists believe that propositions of law are indeed wholly descriptive: they are in fact pieces of history. A proposition of law in their view, is true just in case some event of a designated law-making kind has taken place, and other wise not. This seems to work reasonably well in very simple cases. If the Illinois legislature enacts the words "No will shall be valid without three witnesses, "then the proposition of law, that in Illinois will needs three witnesses, seems to be true only in virtue of that historical event.But in more difficult cases the analysis fails. Consider the proposition that a particular affirmative action scheme is constitutionally valid. If that is true, it cannot be so just in virtue of the text of the Constitution and the fact of prior court decisions, because reasonable lawyers who know exactly what the constitution says and what the courts have done may yet disagree whether it is true. What are the other possibilities? One is to suppose that controversial propositions f law, like the affirmative action statement, are not descriptive at all but are rather expressions of what the speaker wants the law to be.Another is more ambitious: controversial statements are attempts to describe some pure objective or natural law, which exits in virtue of objective moral truth rather than historical decision. Both these projects take some legal statements, at least, to be purely evaluative as distinct from descriptive: they express either what the speaker prefers—his personal politics—or what he believes is objectively required b the principles of an ideal political morality. Neither of these projects is plausible because someone who says that a particular untested affirmative action plan is constitution does mean to describe the law as it is rather than as he wants it to be or thinks that, by the best moral theory, it should be. He might, indeed, say that the regrets that the plan is constitutional and thinks that, according to the best moral theory, it ought not to be.There is a better alternative: propositions of law are not simply descriptive of legal history, in a straightforward way, nor are they simply evaluative in some way divorced from legal history. They are interpretive of legal history, which combines elements of both description and evaluation but is different from both. This suggestion will be congenial, at least at first blush, to many lawyers and legal philosophers. They are used to saying that law is a matter of interpretation; but only, perhaps because they understand interpretation in a certain way. When a statute is unclear on some point, because some crucial term is vague or because a sentence is ambiguous, lawyers say that the statute must be interpreted, and they apply what they call "techniques of statutory construction." Most of the literature assumes that interpretation of a particular document is a matter of discovering what its authors meant to say in using the words they did. But lawyers recognize that on many issues the author had no intention either way and that on others his intention cannot be discovered. Some lawyers take a more skeptical position. They say that whenever judges pretend they are discovering the intention behind some piece of legislation, this is simply a smoke screen behind which the judges impose their own view of what the statute should have been.Ronald Dworkin, professor of jurisprudence at Oxford University, is the author of Taking Rights Seriously and editor of The Philosophy of Law