Next, as to its relation to nature. As I have said, Christianity is simply an addition to it; it does not supersede or contradict it; it recognizes and depends on it, and that of necessity: for how possibly can it prove its claims except by an appeal to what men have already? be it ever so miraculous, it cannot dispense with nature; this would be to cut the ground from under it; for what would be the worth of evidences in favour of a revelation which denied the authority of that system of thought, and those courses of reasoning, out of which those evidences necessarily grew? And in agreement with this obvious conclusion we find in Scripture our Lord and His Apostles always treating Christianity as the completion and supplement of Natural Religion, and of previous revelations; as when He says that the Father testified of Him; that not to know Him was not to know the Father; and as St. Paul at Athens appeals to the “Unknown God,” and says that “He that made the world” “now declareth to all men to do penance, because He hath appointed a day to judge the world by the man whom He hath appointed.” As then our Lord and His Apostles appeal to the God of nature, we must follow them in that appeal; and, to do this with the better effect, we must first inquire into the chief doctrines and the grounds of Natural Religion. § 1. Natural Religion. By Religion I mean the knowledge of God, of His Will, and of our duties towards Him; and there are three main channels which Nature furnishes for our acquiring this knowledge, viz. our own minds, the voice of mankind, and the course of the world, that is, of human life and human affairs. The informations which these three convey to us teach us the Being and Attributes of God, our responsibility to Him, our dependence on Him, our prospect of reward or punishment, to be somehow brought about, according as we obey or disobey Him. And the most authoritative of these three means of knowledge, as being specially our own, is our own mind, whose informations give us the rule by which we test, interpret, and correct what is presented to us for belief, whether by the universal testimony of mankind, or by the history of society and of the world.