The Positivists reject for what they call the scientific age both theology and metaphysics. They believe in the progress of the race, and indeed in all races, as does Dr. McCosh. They distinguish in the history of the human race or of human progress three epochs or stages--first, the theological; second, the metaphysical; and third, the scientific. Theology and metaphysics each in its epoch were true and good, and served the progress of man and society. They have now passed away, and the race is now entering the scientific age, which is the final stage, though not to last forever; for when the field of science is exhausted, and all it yields is harvested, the race will expire, and the world come to an end, as having no more work to do. It will be seen there is here a remarkable difference between the real Positivists, or believers in Auguste Comte, and our author and his Protestant brethren. The Positivists never calumniate the past, but seek to appreciate its services to humanity, to acknowledge the good it did, and to bury it with honor, as the children of the New Dispensation did the Old, when it had lived its day. One of the finest appreciations from the point of view of humanity of the services of the mediæval monks we have ever read is from the pen of M. E. Littré, the chief of the French Positivists, and one of the most learned men of France. It said not all a Catholic would say, but scarcely a word 12 that could grate on a Catholic ear. Dr. McCosh also believes in progress, in the progress of our species, and, for aught we know, in the progress of all species and genera, and that we outgrow the past; but he takes pleasure only in calumniating it, and like a bad son curses the mother that bore him. Because he has outgrown his nurse, he contends the nurse was of no use in his childhood, was a great injury, and it would have been much better to leave him to himself, to toddle about at will, and toddle into the fire or the cistern, as he saw proper.