The leading object, which I propose in the course of lectures which I now commence, is to develop the relations between geology and religion. This cannot be done fully and fairly, however, without exhibiting also many of the religious bearings of several other sciences. I shall, therefore, feel justified in drawing illustrations and arguments from any department of human knowledge which may afford them. I place geology first and most conspicuous on the list, because I know of no other branch of physical science so prolific in its religious applications. In treating of this subject, I shall first exhibit the relations between science and revealed religion, and afterwards between science and natural religion; though in a few cases these two great branches cannot be kept entirely distinct. Geology is usually regarded as having only an unfavorable bearing upon revealed religion; and writers are generally satisfied if they can reconcile apparent discrepancies. But I regard this as an unfair representation; for if geology, or any other science, proves to us that we have not fairly understood the meaning of any passage of Scripture, it merely illustrates, but does not oppose, revelation. A fundamental principle of Protestant Christianity is, that the Scriptures of the Old and New Testaments are the only infallible standard of religious truth; and I desire to hold up this principle prominently at the outset, as one to which I cordially subscribe. The mass of evidence in favor of the divine inspiration of the Bible is too great to be set aside by any thing short of scientific demonstration. Were the Scriptures to teach that the whole is not equal to its parts, the mind could not, indeed, believe it. But if it taught a truth which was only contrary to the probable deductions of science, science, I say, must yield to Scripture; for it would be more reasonable to doubt the probabilities of a single science, than the various and most satisfactory evidence on which revelation rests. I do not believe that even the probabilities of any science are in collision with Scripture. But the supposition is made to show how strong are my convictions of the evidence and paramount authority of the Bible. But does it follow, from these positions, that science can throw no light upon the truths of Scripture? By no means; and it will be my leading object, in this lecture, to show how this may be done by science in general, and by geology in particular. In discussing this subject, we ought to bear in mind the object of science, and the object of revelation. And by the term science I refer mainly to physical science. Its grand aim is, by an induction from facts, to discover the laws by which the material universe is governed. Those laws do, indeed, lead the mind almost necessarily to their divine Author. But this is rather the incidental than the direct result of scientific investigations, and belongs rather to natural theology than to natural science.