Dissenting opinions are comparatively rare, particularly in courts where there is a Chief Justice with the qualities of a leader; that is, with ability, learning and tact, each in full measure.[Footnote: Perhaps tact counts the most, for the Chief Justice has the advantage of hearing the opinions of all his associates at all consultations before he gives his own. Senator Hoar makes a pungent comment on Chief Justice Shaw's want of it, in his Autobiography, II, 413.] Every instance of dissent has a certain tendency to weaken the authority of the decision and even of the court. Law should be certain, and the community in which those charged with its judicial administration differ irreconcilably as to what its rules really are, as applied to the transaction of the daily business of life, will have some cause to think that either their laws or their courts are defective and inadequate. For these reasons judges of appellate courts often concur in opinions, of the soundness of which they are only convinced because of the respect they entertain for the good judgment of their associates. They are willing to distrust themselves rather than them. Not seldom, however, dissent and the preparation of a dissenting opinion has in the course of time, aided, perhaps, by some change of membership, converted the court and led to overruling a position incautiously taken which was inconsistent with settled law.[Footnote: A striking instance of this is the case of Sanderson _v._ Pennsylvania Coal Co., 86 Pennsylvania State Reports, 401; 94 _id_., 302; 102 _id_., 370; 113 _id_., 126; 6 Atlantic Reporter, 453.] More than eighty out of every hundred of the opinions delivered in the courts of last resort of each State of the United States, excepting one (New Jersey), and contained in the last volume of the reports of each published prior to June, 1904, were unanimous. In New Jersey seventy-three out of every hundred were. In two States, Maryland and Vermont, there was dissent in but two out of every hundred cases, and in all the States taken together, out of nearly 5,000 cases decided a dissent is stated in 284 only. This made the proportion of unanimous decisions of State courts, in the country at large, to those in which there was dissent nineteen to one.[Footnote: _Law Notes_ for June, 1904, p. 285.] A dissenting judge sometimes files an opinion which is then printed in full in the reports. More often the fact of his dissent is simply noted. In cases involving constitutional questions it is rare for a dissenting judge not to state his reasons. The importance of the subject justifies if it does not demand it. As Mr. Justice Story once observed, "Upon constitutional questions the public have a right to know the opinion of every judge who dissents from the opinion of the court, and the reasons of his dissent."[Footnote: Briscoe _v._ Bank of Kentucky, 11 Peters' Reports, 257, 349.]