Man devises the word _oak_, and lets it stand for all the oaks in the world. He creates the word _humanity_, and puts into it the whole human race. He coins the word _vegetable_, and uses it to define the whole kingdom of plants. Thus he not only goes over the world and sees it directly, but he produces language manifold and complicated, and elastic enough to accommodate and contain the world, with all that is in it. This makes it possible for him to go round the world and see all its wonders, without leaving the place of his birth. He not only builds for himself the universe in language, so that he can contemplate its moons, and measure its suns, and sail its oceans, and climb its mountains in the silent precincts of his study, but he avails himself of sound and light, also, to give expression to universal ideas. He takes a few notes, and so combines and mixes them as to be able to touch all the chords of the universal human heart in one song. Michael Angelo put all the theology of all the books into the Last Judgment. Throughout the length and breadth of nature, there is economy of faculty and resource until we come to man. The fish has not a gill nor a fin too many, and there is not in the water where he lives any surplus or margin upon which he does not make levies for his life. The wings and tail and bones of the bird are all necessary to his poise and circle in the sky. The same economy is found in the atmosphere through which the bird flies. It is none too heavy and none too light. But when we come to man, we find that margin and surplus is the rule. He has a surplus of faculty and a surplus of resource, a surplus of endowment and a surplus of environment. He finds it necessary to make levies on hardly any of himself to get along in this world, at least as far as his natural wants are concerned. What would be the use for a carpenter to have all the tools necessary to build St. Peter’s at Rome, if his only work was to put up a tent for a week’s camping excursion in the woods? Why have an engine with a million horse power to run a flutter mill?