Every lawsuit looks to two results: to end a controversy, and to end it justly; and in the administration of human government the first is almost as important as the last.[Footnote: Hoyt _v._ Danbury, 69 Conn. Reports, 341, 349.] Certainty is of the essence of justice; but among men and as administered by their governments it can only be such certainty as may be attained by an impartial, intelligent, and well-trained judge. If such a judge has, after a proper hearing, declared what, under a particular set of circumstances, the law is which determines the rights of the parties interested, this declaration makes it certain, once and forever, as far as they are concerned, and helps to make it certain as to any others in the future between whom there is a controversy under circumstances that are similar. If it is the declaration of a court of supreme authority it is ordinarily accepted as of binding force by any inferior courts of the same government, and treated with great respect and as high evidence of the law by any other of its superior courts, as well as by courts of other States before which a similar question may be presented. A decision on a point of law by the highest court in a State does not, however, bind its lower courts as absolutely as would a statute. An inferior court may disregard it and decide the same point another way if it be fully satisfied that the action taken by the court above was ill-considered and erroneous. It is possible that in such event, on reconsideration, the court of last resort may reverse its original position.[Footnote: A good instance of this is furnished by the case of Johnson _v._ People, 140 Illinois Reports, 350; 29 Northeastern Reporter, 895. In McFarland _v._ People, 72 Illinois Reports, 368, the Supreme Court had stated in its opinion, that if two unimpeached witnesses gave the only testimony as to a certain point material to the plaintiff's case, and testified in contradiction of each other, the case failed for want of proof. Many years later a charge to the jury to this effect was asked and refused in an inferior court. An appeal was taken to the Supreme Court, and there Mr. Justice Schofield, the author of the original opinion, thus disposed of it: "Although in McFarland _v._ People, 72 III., 368, the writer of this opinion expressed the belief that a similar instruction was free of legal objection, his remarks in that respect were unnecessary to a determination of the case then before the court, and they were made without sufficient consideration, and are manifestly inaccurate. They are now overruled. The question of competency is one of law, and therefore for the court; but the question of credibility,--that is, of worthiness of belief,--and therefore the effect of the competent evidence of each witness, is one of fact, and for the jury."] If not, that acquires by this attack a double force.