OF THE SOUL IN RELATION TO NATURE. “We know in part,” exclaimed, with burning zeal, the honest man of God in Holy Scripture, “We know in part, and we prophesy in part.” How true the first member of this sentence is even in the case of that knowledge of God which alone deserves the name of knowledge, or repays the trouble of its acquisition, the previous Lecture must in many ways have served to convince us. The second member, which will chiefly occupy our attention in the present discussion, is in an eminent degree applicable to physical science. For what, in fact, is all our knowledge of nature, considered as a whole and in its inmost essence, but a mere speculation, conjecture, and guess upon guess? What is it but an endless series of tentative experiments, by which we are continually hoping to succeed in unveiling the secret of life, to seize the wonderful Proteus, and to hold him fast in the chains of science? Or is it not, perhaps, one ever-renewed attempt to decipher more completely than hitherto the sybilline inscriptions on the piled-up rows and layers of tombs, which as nature grows older convert its great body into one vast catacomb, and so perchance to find therein the key to unlock and bring to light the far greater--nay, the greatest of all riddles--the riddle of death? Now there are undoubtedly, even in nature itself, occasional indications of, scattered hints and remote allusions to, a final crisis, when even in nature and in this sensible and elementary world, life shall be entirely separated from death, and when death itself shall be no more. Gravely to be pondered and in nowise to be neglected are these hints, although without the aid of a higher illumination they must forever remain unintelligible to man. Thus considered, however, the universe itself appears replete with dumb echoes and terrestrial resounds of divine revelation. It is not, therefore, without reason and significance, if in this beautiful hymn the ancient prophetess of nature lends her concurrent testimony to the promises of the holy seer of a last day of creation, which nature shall celebrate as the great day of her renovation and toward which she yearns with an indescribable longing which is nowhere so inimitably depicted, so strongly and so vividly expressed, as in Holy Writ itself. Holy Scripture could not and can not contain a system of science, whether as a philosophy of reason or a science of nature. Nay, in this form of a manual and methodical compendium of divine knowledge, it could not inspire us with confidence either as revelation or as science. Condescending altogether to the wants of man, both in form and language, it consists of a collection of occasional and wholly practical compositions derived immediately from, and expressly designed for, life--in a certain sense it consists of nothing but the registers and social statutes either of the prophetic people or of the apostolical community. Accordingly, its contents are of