of Geology as we know it now. Geology, that is to say, had fallen at last into the great scheme of Law. Religious doctrines, many of them at least, have been up to this time all but as catastrophic as the old Geology. They are not on the lines of Nature as we have learned to decipher her. If any one feel, as Science complains that it feels, that the lie of things in the Spiritual World as arranged by Theology is not in harmony with the world around, is not, in short, scientific, he is entitled to raise the question whether this be really the final form of those departments of Theology to which his complaint refers. He is justified, moreover, in demanding a new investigation with all modern methods and resources; and Science is bound by its principles not less than by the lessons of its own past, to suspend judgment till the last attempt is made. The success of such an attempt will be looked forward to with hopefulness or fearfulness just in proportion to one's confidence in Nature—in proportion to one's belief in the divinity of man and in the divinity of things. If there is any truth in the unity of Nature, in that supreme principle of Continuity which is growing in splendor with every discovery of science, the conclusion is foregone. If there is any foundation for Theology, if the phenomena of the Spiritual World are real, in the nature of things they ought to come into the sphere of Law. Such is at once the demand of Science upon Religion and the prophecy that it can and shall be fulfilled.
The Botany of Linnæus, a purely artificial system, was a splendid contribution to human knowledge, and did more in its day to enlarge the view of the vegetable kingdom than all that had gone before. But all artificial systems must pass away. None knew better than the great Swedish naturalist himself that his system, being artificial, was but provisional. Nature must be read in its own light. And as the botanical field became more luminous, the system of Jussieu and De Candolle slowly emerged as a native growth, unfolded itself as naturally as the petals of one of its own flowers, and forcing itself upon men's intelligence as the very voice of Nature, banished the Linnæan system forever. It were unjust to say that the present Theology is as artificial as the system of Linnæus; in many particulars it wants but a fresh expression to make it in the most modern sense scientific. But if it has a basis in the constitution and course of Nature, that basis has never been adequately shown. It has depended on Authority rather than on Law; and a new basis must be sought and found if it is to be presented to those with whom Law alone is Authority.
It is not of course to be inferred that the scientific method will ever abolish the radical distinctions of the Spiritual World. True science proposes to itself no such general leveling in any department. Within the unity of the whole there must always be room for the characteristic differences of the parts, and those tendencies of thought at the present time which ignore such distinctions, in their zeal for simplicity really create confusion. As has been well said by Mr. Hutton: "Any attempt to merge the distinctive characteristic of a higher science in a lower—of chemical changes in mechanical—of physiological in chemical—above all, of mental changes in physiological—is a neglect of the radical assumption of all science, because it is an attempt to deduce representations—or rather misrepresentations—of one kind of phenomena from a conception of another kind which does not contain it, and must have it implicitly and illicitly smuggled in before it can be extracted out of it. Hence, instead of increasing our means of representing the universe to ourselves without the detailed examination of particulars, such a procedure leads to misconstructions of fact on the basis of an imported theory, and generally ends in forcibly perverting the least-known science to the type of the better known."[16]
What is wanted is simply a unity of conception, but not such a unity of conception as should be founded on an absolute identity of phenomena. This latter might indeed be a unity, but it would be a very tame one. The perfection of unity is attained where there is infinite variety of phenomena, infinite complexity of relation, but great simplicity of Law. Science will be complete when all known phenomena can be arranged in one vast circle in which a few well known Laws shall form the radii—these radii at once separating and uniting, separating into particular groups, yet uniting all to a common center. To show that the radii for some of the most characteristic phenomena of the Spiritual World are already drawn within that circle by science is the main object of the papers which follow. There will be found an attempt to restate a few of the more elementary facts of the Spiritual Life in terms of Biology. Any argument for Natural Law in the Spiritual World may be best tested in the a posteriori form. And although the succeeding pages are not designed in the first instance to prove a principle, they may yet be entered here as evidence. The practical test is a severe one, but on that account all the more satisfactory.
And what will be gained if the point be made out? Not a few things. For one, as partly indicated already, the scientific demand of the age will be satisfied. That demand is that all that concerns life and conduct shall be placed on a scientific basis. The only great attempt to meet that at present is Positivism.
But what again is a scientific basis? What exactly is this demand of the age? "By Science I understand," says Huxley, "all knowledge which rests upon evidence and reasoning of a like character to that which claims our assent to ordinary scientific propositions; and if any one is able to make good the assertion that his theology rests upon valid evidence and sound reasoning, then it appears to me that such theology must take its place as a part of science." That the assertion has been already made good is claimed by many who deserve to be heard on questions of scientific evidence. But if more is wanted by some minds, more not perhaps of a higher kind but of a different kind, at least the attempt can be made to gratify them. Mr. Frederick Harrison,[17] in name of the Positive method of thought, "turns aside from ideal standards which avow themselves to be lawless [the italics are Mr. Harrison's], which profess to transcend the field of law. We say, life and conduct shall stand for us wholly on a basis of law, and must rest entirely in that region of science (not physical, but moral and social science) where we are free to use our intelligence, in the methods known to us as intelligible logic, methods which the intellect can analyze. When you confront us with hypotheses, however sublime and however affecting, if they cannot be stated in terms of the rest of our knowledge, if they are disparate to that world of sequence and sensation which to us is the ultimate base of all our real knowledge, then we shake our heads and turn aside." This is a most reasonable demand, and we humbly accept the challenge. We think religious truth, or at all events certain of the largest facts of the Spiritual Life, can be stated "in terms of the rest of our knowledge."
We do not say, as already hinted, that the proposal includes an attempt to prove the existence of the Spiritual World. Does that need proof? And if so, what sort of evidence would be considered in court? The facts of the Spiritual World are as real to thousands as the facts of the Natural World—and more real to hundreds. But were one asked to prove that the Spiritual World can be discerned by the appropriate faculties, one would do it precisely as one would attempt to prove the Natural World to be an object of recognition to the senses—and with as much or as little success. In either instance probably the fact would be found incapable of demonstration, but not more in the one case than in the other. Were one asked to prove the existence of Spiritual Life, one would also do it exactly as one would seek to prove Natural Life. And this perhaps might be attempted with more hope. But this is not on the immediate programme. Science deals with known facts; and accepting certain known facts in the Spiritual World we proceed to arrange them, to discover their Laws, to inquire if they can be stated "in terms of the rest of our knowledge."
At the same time, although attempting no philosophical proof of the existence of a Spiritual Life and a Spiritual World, we are not without hope that the general line of thought here may be useful to some who are honestly inquiring in these directions. The stumbling-block to most minds is perhaps less the mere existence of the unseen than the want of definition, the apparently hopeless vagueness, and not least, the delight in this vagueness as mere vagueness by some who look upon this as the mark of quality in Spiritual things. It will be at least something to tell earnest seekers that the Spiritual World is not a castle in the air, of an architecture unknown to earth or heaven, but a fair ordered realm furnished with many familiar things and ruled by well-remembered Laws.
It
