A revolution followed upon this and other like convictions, as revolutions have usually followed such uses of the judicial power. In that revolution the principle of the limitation of the judicial function was recognized, and the English people seriously addressed themselves to the task of separating their courts from political influences, of protecting their judges by making their tenure and their pay permanent, and of punishing them by removal if they behaved corruptly, or with prejudice, or transcended the limits within which their duty confined them. Jeffreys had legislated when he ruled it to be the law that, to write words secretly in one's closet, is to commit an overt act of treason, and he did it to kill a man whom the king who employed him wished to destroy. This was to transcend the duty of a judge, which is to expound and not to legislate. The judge may develop a principle, he may admit evidence of a custom in order to explain the intentions of the parties to a suit, as Lord Mansfield admitted evidence of the customs of merchants, but he should not legislate. To do so, as Jeffreys did in Sidney's case, is tantamount to murder. Jeffreys never was duly punished for his crimes. He died the year after the Revolution, in the Tower, maintaining to the last that he was innocent in the sight of God and man because "all the blood he had shed fell short of the King's command." And Jeffreys was perfectly logical and consistent in his attitude. A judiciary is either an end in itself or a means to an end. If it be designed to protect the civil rights of citizens indifferently, it must be free from pressure which will deflect it from this path, and it can only be protected from the severest possible pressure by being removed from politics, because politics is the struggle for ascendancy of a class or a majority. If, on the other hand, the judiciary is to serve as an instrument for advancing the fortunes of a majority or a dominant class, as David used the Jewish judiciary, or as the Stuarts used the English judiciary, then the judicial power must be embodied either in a military or political leader, like David, who does the work himself, or in an agent, more or less like Jeffreys, who will obey his orders. In the colonies the subserviency of the judges to the Crown had been a standing grievance, and the result of this long and terrible experience, stretching through centuries both in Europe and America, had been to inspire Americans with a fear of intrusting power to any man or body of men. They sought to limit everything by written restrictions. Setting aside the objection that such a system is mechanically vicious because it involves excessive friction and therefore waste of energy, it is obviously futile unless the written restrictions can be enforced, and enforced in the spirit in which they are drawn. Hamilton, whose instinct for law resembled genius, saw the difficulty and pointed out in the