But now, if it be not reason, but rather understanding, that, with the co-operation of all the other faculties both of soul and spirit, is the proper organ for acquiring a knowledge of the divine, and the only means by which man can arrive at a right apprehension thereof; then is the knowledge of God simply and entirely a science of experience, although of a high and peculiar kind, by reason of the finiteness and frailty of man as compared with such an object. As the fancy is the apprehension or seizing of an object, the reason a combination or distinction, so the understanding is the faculty which penetrates, and, in its highest degree, clearly sees through its object. We understand a phenomenon, a sensation, an object, when we have discerned its inmost meaning, its peculiar character and proper significance. And the same is the case even when this object be a speech and communication addressed to us--a word or discourse given us to extract its meaning. If we have discerned the design which is involved in such a communication, its real meaning and purpose, then may we be said to have understood it, even though some minutiæ in the expression may still remain unintelligible, which, as not belonging essentially to the whole, we put aside and leave unconsidered. There are, therefore, many steps and degrees in understanding--very different phases and species of it. A familiar instance will, perhaps, elucidate this matter. We will suppose the case of an extremely rare and remarkable, or, perhaps, hitherto wholly unknown, plant, brought to our country from a foreign clime. The naturalist, having examined its structure and organs, assigns it to a particular class of the higher botanical genera, where it either belongs to some lower species or forms an exception. The chemist, again, when the plant is brought before his notice, conjectures, from certain other characters, that it is formed of such or such elementary parts; while the physician, on other grounds, concludes that in certain diseases it will probably serve as a remedy, equally if not more efficacious than other herbs or roots previously employed for that purpose. Now, if the two last have judged correctly, if their conjectures be confirmed by trial and experiment, then will all the three have understood the plant, and each in his own department have learned and discerned its intrinsic character. Again: how slowly, step by step and gradually, do men attain to the understanding of some ancient, foreign, and difficult language. It commences, perhaps, with the long and difficult deciphering of a manuscript or inscription, with an alphabet incomplete or imperfectly known, and after much painful labor the final discovery of its true meaning is made perhaps by some fortunate accident which all at once throws a full light upon it. A remarkable instance, in our own days, will both elucidate the matter, and serve at the same time to prove how a higher Providence regulates even the progress of science.