Through the eye of sense, Columbus sees a few pieces of driftwood brought to the shore by the waves of the ever-restless sea; but these help him, through the eye of reason, to see a new world with its virgin forests, its wide-reaching plains and its majestic mountain ranges. Agassiz sees through the eye of sense an indentation on a rock in the State of Maine. This gives him a suggestion which helps him to see, through the eye of reason, the icebergs and the glaciers, which, in the early ages, ground their way to the south. The man of science sees through the eye of sense, only a bit of chalk; but from this a suggestion comes to him, which enables him to see through the eye of reason the oozy bed upon which the submarine cable rests; and the life that sported in the vast oceans when the Dover Cliffs were being formed. Through the eye of sense Cuvier sees an immense tooth, larger than any known at the present. Through the eye of reason he sees the huge animal in whose jaw it was set. Upon the comprehensive, active power of reason, man relies to determine for him the elements good for food, the power which serves his social nature, the truth which furnishes his intellect, the right which matches his will, and the beauty which corresponds with his æsthetic nature. The universe lends itself in its totality to the scale and the dip of the particular capacity or power through which man, for the time being, seeks to appropriate it. It stands before the sense of hunger in terms of bread. It stands before the social nature in terms of power. It stands before the intellect in terms of truth. It stands before the will in terms of law. It stands before the æsthetic nature in terms of beauty. The person who has related himself to the world through all the powers of his nature, finds it capable, by turns, of feeding every faculty with which he is endowed. The universe is now all bread, now all power, now all truth, now all law, and now all beauty. It will be any or all of these, according to the side, or sides, of himself through which he addresses it. One of the great discoveries of modern times is the correlation of forces. The persistent force may express itself in heat, or light, or electricity, or magnetism. These are only different forms of the same thing, and any one may pass to any of the others. In the world, as a whole, we find the sense of correlation inheres, as it relates itself to the different faculties man has for taking hold of it. As the correlate of hunger, it is all bread; as the correlate of the social nature, it is all power; as the correlate of the intellect, it is all truth; as the correlate of the will, it is all law, and as the correlate of the æsthetic sense, it is all beauty. Objective reality is addressed to the many sides of human life, in order that the whole of it may be used up for the purpose of making a man. It is all to be drawn into manhood. As all rivers meet in the ocean, and all colors meet in the