Overpowering as is the impression of the remarkableness of this man produced by following him, as we have been doing, as he hurries from province to province, from continent to continent, over land and sea, in pursuit of the object to which he was devoted, this impression is immensely deepened when we remember that he was at the same time the greatest thinker of his age, if not of any age, and, in the midst of his outward labors, was producing writings which have ever since been among the mightiest intellectual forces of the world, and are still growing in their influence.