All this is eminently applicable to science in its relation to agnostic speculations. The material of the physical and natural sciences consists of facts ascertained by the evidence of our senses, and for which we depend on the truthfulness of those senses and the stability of external nature. Science proceeds, by comparison of these facts and by inductive reasoning, to arrange them under certain general expressions or laws. So far all is merely physical, and need have no connection with our origin or destiny or relation to higher powers. But we ourselves are a part of the nature which we study; and we cannot study it without more or less thinking our own thoughts into it. Thus we naturally begin to inquire as to origins and first causes, and as to the source of the energy and order which we perceive; and to these questions the human mind demands some answer, either actual or speculative. But here we enter into the domain of religious thought, or that which relates to a power or powers beyond and above nature. Whatever forms our thoughts on such subjects may take, these depend, not directly on the facts of science, but on the reaction of our minds on these facts. They are truly anthropomorphic. It has been well said that it is as idle to inquire as to the origin of such religious ideas as to inquire as to the origin of hunger and thirst. Given the man, they must necessarily exist. Now, whatever form these philosophical or religious ideas may take--whether that of Agnosticism or Pantheism or Theism--science, properly so called, has no right to be either praised or blamed. Its material may be used, but the structure is the work of the artificer himself. It is well, however, to carry with us the truth that this border-land between science and religion is one which men cannot be prevented from entering; but what they may find therein depends very much on themselves. Under wise guidance it may prove to us an Eden, the very gate of heaven, and we may acquire in it larger and more harmonious views of both the seen and the unseen, of science and of religion. But, on the other hand, it may be found to be a battle-field or a bedlam, a place of confused cries and incoherent ravings, and strewn with the wrecks of human hopes and aspirations. There can be no question that the more unpleasant aspect of the matter is somewhat prevalent in our time, and that we should, if possible, understand the causes of the conflict and the confusion that prevail, and the way out of them. To do this it will be necessary first to notice some of the incidental or extraneous causes of difficulty and strife, and then to inquire more in detail as to the actual bearing of the scientific knowledge of nature on Agnosticism.