It is one of the difficulties which meet anyone who suggests that modern science is not wholly satisfactory, that it is immediately assumed that the writer is covertly defending what Ingersoll calls the "rib-story," or that he wishes to restore belief in the literal inspiration of the Bible. But, religious controversy apart, and while admitting that Science has done a great work in cleaning away the kitchen-middens of superstition and opening the path to clearer and saner views of the world, it is possible--and there is already a growing feeling that way--that her positive contributions to our comprehension of the order of the universe have in late times been disappointing, and that even her methods are only of limited applicability. After a glorious burst of perhaps fifty years, amid great acclamations and good hopes that the crafty old universe was going to be caught in her careful net, Science, it must be confessed, now finds herself in almost every direction in the most hopeless quandaries; and, whether the rib-story be true or not, has at any rate provided no very satisfactory substitute for it. And the reason of this failure is very obvious. It goes with a certain defect in the human mind, which, as we have pointed out (note, p. 57), necessarily belongs to the Civilisation-period--the tendency, namely, to separate the logical and intellectual part of man from the emotional and instinctive, and to give it a _locus standi_ of its own. Science has failed, because she has attempted to carry out the investigation of nature from the intellectual side alone--neglecting the other constituents necessarily involved in the problem. She has failed, because she has attempted an impossible task; for the discovery of a permanently valid and purely _intellectual_ representation of the universe is simply impossible. Such a thing does not exist. The various theories and views of nature which we hold are merely the fugitive envelopes of the successive stages of human growth--each set of theories and views belonging organically to the moral and emotional stage which has been reached, and being in some sort the expression of it; so that the attempt at any given time to set up an explanation of phenomena which shall be valid in itself and without reference to the mental condition of those who set it up, necessarily ends in failure; and the present state of confusion and contradiction in which modern Science finds itself is merely the result of such attempt. Of course this limitation of the validity of Science has been recognised by most of those who have thought about the matter;[17] but it is so commonly overlooked, and latterly the notion has so far gained ground that the "laws" of science are immutable facts and eternal statements of verity, that it may be worth while to treat the subject a little more in detail.