No one will deny that wrong statutes can be and are enforced, and we would not all agree as to which were the wrong ones. The confusion with which I am dealing besets confessedly legal conceptions. Take the fundamental question, What constitutes the law? You will find some text writers telling you that it is something different from what is decided by the courts of Massachusetts or England, that it is a system of reason, that it is a deduction from principles of ethics or admitted axioms or what not, which may or may not coincide with the decisions. But if we take the view of our friend the bad man we shall find that he does not care two straws for the axioms or deductions, but that he does want to know what the Massachusetts or English courts are likely to do in fact. I am much of this mind. The prophecies of what the courts will do in fact, and nothing more pretentious, are what I mean by the law. Take again a notion which as popularly understood is the widest conception which the law contains--the notion of legal duty, to which already I have referred. We fill the word with all the content which we draw from morals. But what does it mean to a bad man? Mainly, and in the first place, a prophecy that if he does certain things he will be subjected to disagreeable consequences by way of imprisonment or compulsory payment of money. But from his point of view, what is the difference between being fined and taxed a certain sum for doing a certain thing? That his point of view is the test of legal principles is proven by the many discussions which have arisen in the courts on the very question whether a given statutory liability is a penalty or a tax. On the answer to this question depends the decision whether conduct is legally wrong or right, and also whether a man is under compulsion or free. Leaving the criminal law on one side, what is the difference between the liability under the mill acts or statutes authorizing a taking by eminent domain and the liability for what we call a wrongful conversion of property where restoration is out of the question. In both cases the party taking another man's property has to pay its fair value as assessed by a jury, and no more. What significance is there in calling one taking right and another wrong from the point of view of the law? It does not matter, so far as the given consequence, the compulsory payment, is concerned, whether the act to which it is attached is described in terms of praise or in terms of blame, or whether the law purports to prohibit it or to allow it. If it matters at all, still speaking from the bad man's point of view, it must be because in one case and not in the other some further disadvantages, or at least some further consequences, are attached to the act by law. The only other disadvantages thus attached to it which I ever have been able to think of are to be found in two somewhat insignificant legal doctrines, both of which might be abolished without much disturbance.