A palpable mistake, violating justice, reason and law, must be corrected, no matter by whom it may have been made. There are cases in our books which bear such marks of haste and inattention, that they demand reconsideration. There are some which must be disregarded, because they cannot be reconciled with others. There are old decisions of which the authority has become obsolete, by a total alteration in the circumstances of the country and the progress of opinion. _Tempora mutantur_. We change with the change of the times, as necessarily as we move with the motion of the earth. But in ordinary cases, to set up our mere notions above the principles which the country has been acting upon as settled and established, is to make ourselves not the ministers and agents of the law, but the masters of the law and the tyrants of the people.[Footnote: McDowell _v._ Oyer, 9 Harris' Reports, 423.] Generally, overruling a former decision is due to a change of circumstances, which has given the court a new view-point. A marked instance of this occurred in 1851, in proceedings before the Supreme Court of the United States. More than a quarter of a century before, a suit in admiralty for seamen's wages on an inland river had been dismissed by the District Court of Kentucky for want of jurisdiction, and on appeal this action had been affirmed. Mr. Justice Story gave the opinion of the court, and said that a court of admiralty could only take cognizance of such a claim when the services were rendered at sea or upon waters within the ebb and flow of the tide.[Footnote: The Thomas Jefferson, 10 Wheaton's Reports, 428.] This was undoubtedly a true statement of what had always been the doctrine of both English and American courts. But out of what did this doctrine spring? From the fact that in England there were no navigable waters except those in which the tide ebbed and flowed, and that in the United States, up to that time, there were none of a different kind which had been largely used for commercial purposes. Twenty years passed. Steam navigation had opened the great lakes and the great rivers of the country to a profitable carrying trade. The day was dawning when the bulk of American shipping was to be employed upon them. A suit in admiralty was brought against a ship for sinking another on Lake Ontario. The defendants put in an answer relying on the doctrine laid down by Story. The District Court overruled it. The case came by appeal to the Supreme Court, and in an opinion by Chief Justice Taney the appeal was dismissed. "The conviction," he said, referring to the opinion of Mr. Justice Story, "that this definition of admiralty powers was narrower than the Constitution contemplated, has been growing stronger every day with the growing commerce on the lakes and navigable rivers of the western States.... These lakes are in truth inland seas. Different States border on them on one side and a foreign nation on the other.