The mystery is not difficult to explain. The physiologists, of course, are good Sadducees, and really, unless going through a churchyard after dark, or caught in a storm at sea, and in danger of shipwreck, believe in neither angel nor spirit. They wish to reduce all events, all phenomena, intellectual, moral, and religious, to fixed, invariable, inflexible, irreversible, and necessary laws of nature. They exclude in doctrine, if not in words, the supernatural, creation, providence, and all contingency. Every thing in man and in the universe is generated or developed by physiological or natural laws, and follows them in all their variations and changes. {165} Religion, then, must be a natural production, generated by man, in conjunction with nature, and modified, changed, or destroyed, according to the physical causes to which he is subjected in time and place. This is partially true, or, at least, not manifestly false in all respects of the various pagan superstitions, and many facts may be cited that seem to prove it; but it is manifestly not true of the patriarchal, Jewish, and Christian religion, and the only way to make it appear true, is to not distinguish that religion from the others, to include all religions in one and the same category, and conclude that what they prove to be partially true of a part, is and must be true of the whole. That this is fair or logical, is not a matter that the physiologists, who, where they detect an analogy, conclude identity, trouble themselves at all about; besides, nothing in their view is illogical or unfair that tends to discredit priests and theologians. Very likely, also, such is their disdain or contempt of religion, that they really do not know that there is any radical difference between Christianity and Gentooism. We have never encountered a physiologist, in the sense we use the term here, that is, one who maintains that all in the history of man and the universe proceeds from nature alone, who had much knowledge of Christian theology, or knowledge enough to be aware that in substance it is not identical with the pagan superstitions. Their ignorance of our religion is sublime.