Sovereigns have always enjoyed immunity from suit by private persons, unless they have been pleased to assent thereto, not because it is less wrongful for a sovereign than for an individual to cheat, but because the sovereign cannot be arrested and the individual can. With the Declaration of Independence the thirteen colonies became sovereigns. Petty sovereigns it is true, and singly contemptible in physical force as against most foreign nations, but none the less tenacious of the attributes of sovereignty, and especially of the attribute which enabled them to repudiate their debts. Jay, Marshall, and their like, thought that they could impose the same moral standard upon the states as upon private persons; they were unable to do so, but in making the attempt they involved the American judicial system in a maze of difficulties whose gravity, I fear, can hardly be exaggerated. Before entering upon this history, however, I must say a word touching the nature of our law. Municipal law, to be satisfactory, should be a body of abstract principles capable of being applied impartially to all relevant facts, just as Marshall and Jay held it to be. Where exceptions begin, equality before the law ends, as I have tried to show by the story of King David and Uriah, and therefore the great effort of civilization has been to remove judges from the possibility of being subjected to a temptation, or to a pressure, which may deflect them from impartiality as between suitors. In modern civilization, especially, nothing is so fatal to the principle of order as inequality in the dispensation of justice, and it would have been reasonable to suppose that Americans, beyond all others, would have been alive to this teaching of experience, and have studiously withdrawn their bench from politics. In fact they have ignored it, and instead they have set their judiciary at the focus of conflicting forces. The result has been the more unfortunate as the English system of jurisprudence is ill calculated to bear the strain, it being inflexible. In theory the English law moves logically from precedent to precedent, the judge originating nothing, only elaborating ideas which he has received from a predecessor, and which are binding on him. If the line of precedents leads to wrongful conclusions, the legislature must intervene with a statute rectifying the wrong. The Romans, who were gifted with a higher legal genius than we, managed better. The praetor, by his edict, suppressed inconvenient precedents, and hence the Romans maintained flexibility in their municipal law without falling into confusion. We have nothing to correspond to the praetor.