Was it reasonable to expect a revelation from God? Is it necessary to the greatest good of the greatest number? If so, it is a thought at once involving the moral character of God and necessitating a revelation of himself. In answering these questions intelligently we must look after the demands for such a communication. Where shall we find them? Answer, in the wants of our humanity. Here two kinds of light are needed for two pair of eyes in order that we may be happy in two respects. First, physical light for the physical eyes, in order to the enjoyment of physical life in a material world. Second, the light of knowledge for the eyes of the understanding, in order to the enjoyment of spiritual life in a spiritual world. It is universally conceded that there are means provided in nature to meet man's physical wants and adaptations that manifest the wisdom that belongs to God; also, that it would have been the work of a demon to create man with these wants, like so many empty vessels, without any provision to satisfy or fill them. Without those supplies our suffering would be great and our wretchedness unendurable. Is there no liability to mental suffering? Are there no spiritual wants consequent upon the nature of mind?