The whole character and fortune of the individual are affected by the least inequalities in the culture of the understanding; for example, in the perception of differences. Therefore is Space, and therefore Time, that man may know that things are not huddled and lumped, but sundered and individual. A bell and a plough have each their use, and neither can do the office of the other. Water is good to drink, coal to burn, wool to wear; but wool cannot be drunk, nor water spun, nor coal eaten. The wise man shows his wisdom in separation, in gradation, and his scale of creatures and of merits is as wide as nature. The foolish have no range in their scale, but suppose every man is as every other man. What is not good they call the worst, and what is not hateful, they call the best. In like manner, what good heed nature forms in us! She pardons no mistakes. Her yea is yea, and her nay, nay. The first steps in Agriculture, Astronomy, Zoölogy, (those first steps which the farmer, the hunter, and the sailor take,) teach that nature’s dice are always loaded; that in her heaps and rubbish are concealed sure and useful results. How calmly and genially the mind apprehends one after another the laws of physics! What noble emotions dilate the mortal as he enters into the counsels of the creation, and feels by knowledge the privilege to BE! His insight refines him. The beauty of nature shines in his own breast. Man is greater than he can see this, and the universe less, because Time and Space relations vanish as laws are known. Here again we are impressed and even daunted by the immense Universe to be explored. “What we know, is a point to what we do not know.” Open any recent journal of science, and weigh the problems suggested concerning Light, Heat, Electricity, Magnetism, Physiology, Geology, and judge whether the interest of natural science is likely to be soon exhausted. Passing by many particulars of the discipline of nature, we must not omit to specify two. The exercise of the Will or the lesson of power is taught in every event. From the child’s successive possession of his several senses up to the hour when he saith, “Thy will be done!” he is learning the secret, that he can reduce under his will, not only particular events, but great classes, nay the whole series of events, and so conform all facts to his character. Nature is thoroughly mediate. It is made to serve. It receives the dominion of man as meekly as the ass on which the Saviour rode. It offers all its kingdoms to man as the raw material which he may mould into what is useful. Man is never weary of working it up. He forges the subtile and delicate air into wise and melodious words, and gives them wing as angels of persuasion and command. One after another, his victorious thought comes up with and reduces all things, until the world becomes, at last, only a realized will,--the double of the man.