When we reached the great bend just above Middlesex, where the river runs east thirty-five miles to the sea, we at length lost the aid of this propitious wind, though we contrived to make one long and judicious tack carry us nearly to the locks of the canal. We were here locked through at noon by our old friend, the lover of the higher mathematics, who seemed glad to see us safe back again through so many locks; but we did not stop to consider any of his problems, though we could cheerfully have spent a whole autumn in this way another time, and never have asked what his religion was. It is so rare to meet with a man out-doors who cherishes a worthy thought in his mind, which is independent of the labor of his hands. Behind every man's busy-ness there should be a level of undisturbed serenity and industry, as within the reef encircling a coral isle there is always an expanse of still water, where the depositions are going on which will finally raise it above the surface.
The eye which can appreciate the naked and absolute beauty of a scientific truth is far more rare than that which is attracted by a moral one. Few detect the morality in the former, or the science in the latter. Aristotle defined art to be The principle of the work without the wood; but most men prefer to have some of the wood along with the principle; they demand that the truth be clothed in flesh and blood and the warm colors of life. They prefer the partial statement because it fits and measures them and their commodities best. But science still exists everywhere as the sealer of weights and measures at least.
We have heard much about the poetry of mathematics, but very little of it has yet been sung. The ancients had a juster notion of their poetic value than we. The most distinct and beautiful statement of any truth must take at last the mathematical form. We might so simplify the rules of moral philosophy, as well as of arithmetic, that one formula would express them both. All the moral laws are readily translated into natural philosophy, for often we have only to restore the primitive meaning of the words by which they are expressed, or to attend to their literal instead of their metaphorical sense. They are already supernatural philosophy. The whole body of what is now called moral or ethical truth existed in the golden age as abstract science. Or, if we prefer, we may say that the laws of Nature are the purest morality. The Tree of Knowledge is a Tree of Knowledge of good and evil. He is not a true man of science who does not bring some sympathy to his studies, and expect to learn something by behavior as well as by application. It is childish to rest in the discovery of mere coincidences, or of partial and extraneous laws. The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one. Mathematics should be mixed not only with physics but with ethics, that is mixed mathematics. The fact which interests us most is the life of the naturalist. The purest science is still biographical. Nothing will dignify and elevate science while it is sundered so wholly from the moral life of its devotee, and he professes another religion than it teaches, and worships at a foreign shrine. Anciently the faith of a philosopher was identical with his system, or, in other words, his view of the universe.
My friends mistake when they communicate facts to me with so much pains. Their presence, even their exaggerations and loose statements, are equally good facts for me. I have no respect for facts even except when I would use them, and for the most part I am independent of those which I hear, and can afford to be inaccurate, or, in other words, to substitute more present and pressing facts in their place.
The poet uses the results of science and philosophy, and generalizes their widest deductions.
The process of discovery is very simple. An unwearied and systematic application of known laws to nature, causes the unknown to reveal themselves. Almost any mode of observation will be successful at last, for what is most wanted is method. Only let something be determined and fixed around which observation may rally. How many new relations a foot-rule alone will reveal, and to how many things still this has not been applied! What wonderful discoveries have been, and may still be, made, with a plumb-line, a level, a surveyor's compass, a thermometer, or a barometer! Where there is an observatory and a telescope, we expect that any eyes will see new worlds at once. I should say that the most prominent scientific men of our country, and perhaps of this age, are either serving the arts and not pure science, or are performing faithful but quite subordinate labors in particular departments. They make no steady and systematic approaches to the central fact. A discovery is made, and at once the attention of all observers is distracted to that, and it draws many analogous discoveries in its train; as if their work were not already laid out for them, but they had been lying on their oars. There is wanting constant and accurate observation with enough of theory to direct and discipline it.
But, above all, there is wanting genius. Our books of science, as they improve in accuracy, are in danger of losing the freshness and vigor and readiness to appreciate the real laws of Nature, which is a marked merit in the ofttimes false theories of the ancients. I am attracted by the slight pride and satisfaction, the emphatic and even exaggerated style in which some of the older naturalists speak of the operations of Nature, though they are better qualified to appreciate than to discriminate the facts. Their assertions are not without value when disproved. If they are not facts, they are suggestions for Nature herself to act upon. "The Greeks," says Gesner, "had a common proverb (Lagos katheudon) a sleeping hare, for a dissembler or counterfeit; because the hare sees when she sleeps; for this is an admirable and rare work of Nature, that all the residue of her bodily parts take their rest, but the eye standeth continually sentinel."
Observation is so wide awake, and facts are being so rapidly added to the sum of human experience, that it appears as if the theorizer would always be in arrears, and were doomed forever to arrive at imperfect conclusions; but the power to perceive a law is equally rare in all ages of the world, and depends but little on the number of facts observed. The senses of the savage will furnish him with facts enough to set him up as a philosopher. The ancients can still speak to us with authority, even on the themes of geology and chemistry, though these studies are thought to have had their birth in modern times. Much is said about the progress of science in these centuries. I should say that the useful results of science had accumulated, but that there had been no accumulation of knowledge, strictly speaking, for posterity; for knowledge is to be acquired only by a corresponding experience. How can we know what we are told merely? Each man can interpret another's experience only by his own. We read that Newton discovered the law of gravitation, but how many who have heard of his famous discovery have recognized the same truth that he did? It may be not one. The revelation which was then made to him has not been superseded by the revelation made to any successor.
We see the planet fall, And that is all.
In a review of Sir James Clark Ross's Antarctic Voyage of Discovery, there is a passage which shows how far a body of men are commonly impressed by an object of sublimity, and which is also a good instance of the step from the sublime to the ridiculous. After describing the discovery of the Antarctic Continent, at first seen a hundred miles distant over fields of ice,—stupendous ranges of mountains from seven and eight to twelve and fourteen thousand feet high, covered with eternal snow and ice, in solitary and inaccessible grandeur, at one time the weather being beautifully clear, and the sun shining on the icy landscape; a continent whose islands only are accessible, and these exhibited "not the smallest trace of vegetation," only in a few places the rocks protruding through their icy covering, to convince the beholder that land formed the nucleus, and that it was not an iceberg;—the practical British reviewer proceeds thus, sticking to his last, "On the 22d of January, afternoon, the Expedition made the latitude of 74 degrees 20' and by 7h P.M., having ground (ground! where did they get ground?) to believe that they were then in a higher southern latitude than had been attained by that enterprising