These things, he said, are properly not objects of knowledge at all. Our conceptions always require a sense-content to work with, and as the words 'soul,' 'God,' 'immortality,' cover no distinctive sense-content whatever, it follows that theoretically speaking they are words devoid of any significance. Yet strangely enough they have a definite meaning for our practice. We can act as if there were a God; feel as if we were free; consider Nature as if she were full of special designs; lay plans as if we were to be immortal; and we find then that these words do make a genuine difference in our moral life. Our faith that these unintelligible objects actually exist proves thus to be a full equivalent in praktischer Hinsicht, as Kant calls it, or from the point of view of our action, for a knowledge of what they might be, in case we were permitted positively to conceive them. So we have the strange phenomenon, as Kant assures us, of a mind believing with all its strength in the real presence of a set of things of no one of which it can form any notion whatsoever.
My object in thus recalling Kant's doctrine to your mind is not to express any opinion as to the accuracy of this particularly uncouth part of his philosophy, but only to illustrate the characteristic of human nature which we are considering, by an example so classical in its exaggeration. The sentiment of reality can indeed attach itself so strongly to our object of belief that our whole life is polarized through and through, so to speak, by its sense of the existence of the thing believed in, and yet that thing, for purpose of definite description, can hardly be said to be present to our mind at all. It is as if a bar of iron, without touch or sight, with no representative faculty whatever, might nevertheless be strongly endowed with an inner capacity for magnetic feeling; and as if, through the various arousals of its magnetism by magnets coming and going in its neighborhood, it might be consciously determined to different attitudes and tendencies. Such a bar of iron could never give you an outward description of the agencies that had the power of stirring it so strongly; yet of their presence, and of their significance for its life, it would be intensely aware through every fibre of its being.
It is not only the Ideas of pure Reason, as Kant styled them, that have this power of making us vitally feel presences that we are impotent articulately to describe. All sorts of higher abstractions bring with them the same kind of impalpable appeal. Remember those passages from Emerson which I read at my last lecture. The whole universe of concrete objects, as we know them, swims, not only for such a transcendentalist writer, but for all of us, in a wider and higher universe of abstract ideas, that lend it its significance. As time, space, and the ether soak through all things, so (we feel) do abstract and essential goodness, beauty, strength, significance, justice, soak through all things good, strong, significant, and just.
Such ideas, and others equally abstract, form the background for all our facts, the fountain-head of all the possibilities we conceive of. They give its 'nature,' as we call it, to every special thing. Everything we know is 'what' it is by sharing in the nature of one of these abstractions. We can never look directly at them, for they are bodiless and featureless and footless, but we grasp all other things by their means, and in handling the real world we should be stricken with helplessness in just so far forth as we might lose these mental objects, these adjectives and adverbs and predicates and heads of classification and conception.
This absolute determinability of our mind by abstractions is one of the cardinal facts in our human constitution. Polarizing and magnetizing us as they do, we turn towards them and from them, we seek them, hold them, hate them, bless them, just as if they were so many concrete beings. And beings they are, beings as real in the realm which they inhabit as the changing things of sense are in the realm of space.
Plato gave so brilliant and impressive a defense of this common human feeling, that the doctrine of the reality of abstract objects has been known as the platonic theory of ideas ever since. Abstract Beauty, for example, is for Plato a perfectly definite individual being, of which the intellect is aware as of something additional to all the perishing beauties of the earth. "The true order of going," he says, in the often quoted passage in his 'Banquet,' "is to use the beauties of earth as steps along which one mounts upwards for the sake of that other Beauty, going from one to two, and from two to all fair forms, and from fair forms to fair actions, and from fair actions to fair notions, until from fair notions he arrives at the notion of absolute Beauty, and at last knows what the essence of Beauty is."2 In our last lecture we had a glimpse of the way in which a platonizing writer like Emerson may treat the abstract divineness of things, the moral structure of the universe, as a fact worthy of worship. In those various churches without a God which to-day are spreading through the world under the name of ethical societies, we have a similar worship of the abstract divine, the moral law believed in as an ultimate object. 'Science' in many minds is genuinely taking the place of a religion. Where this is so, the scientist treats the 'Laws of Nature' as objective facts to be revered. A brilliant school of interpretation of Greek mythology would have it that in their origin the Greek gods were only half-metaphoric personifications of those great spheres of abstract law and order into which the natural world falls apart—the sky-sphere, the ocean-sphere, the earth-sphere, and the like; just as even now we may speak of the smile of the morning, the kiss of the breeze, or the bite of the cold, without really meaning that these phenomena of nature actually wear a human face.3
As regards the origin of the Greek gods, we need not at present seek an opinion. But the whole array of our instances leads to a conclusion something like this: It is as if there were in the human consciousness a sense of reality, a feeling of objective presence, a perception of what we may call 'something there,' more deep and more general than any of the special and particular 'senses' by which the current psychology supposes existent realities to be originally revealed. If this were so, we might suppose the senses to waken our attitudes and conduct as they so habitually do, by first exciting this sense of reality; but anything else, any idea, for example, that might similarly excite it, would have that same prerogative of appearing real which objects of sense normally possess. So far as religious conceptions were able to touch this reality-feeling, they would be believed in in spite of criticism, even though they might be so vague and remote as to be almost unimaginable, even though they might be such non-entities in point of whatness, as Kant makes the objects of his moral theology to be.
The most curious proofs of the existence of such an undifferentiated sense of reality as this are found in experiences of hallucination. It often happens that an hallucination is imperfectly developed: the person affected will feel a 'presence' in the room, definitely localized, facing in one particular way, real in the most emphatic sense of the word, often coming suddenly, and as suddenly gone; and yet neither seen, heard, touched, nor cognized in any of the usual 'sensible' ways. Let me give you an example of this, before I pass to the objects with whose presence religion is more peculiarly concerned.
An intimate friend of mine, one of the keenest intellects I know, has had several experiences of this sort. He writes as follows in response to my inquiries:—
"I have several times within the past few years felt the so-called 'consciousness of a presence.' The experiences which I have in mind are clearly distinguishable from another kind of experience which I have had very frequently, and which I fancy many persons would also call the 'consciousness of a presence.' But the difference for me between the two sets of experience is as great as the difference between feeling a slight warmth originating I know not where, and standing in the midst of a conflagration with all the ordinary senses alert.
"It was about September, 1884, when I had the first experience. On the previous night I had had, after getting into bed at my rooms in College, a vivid tactile hallucination of being grasped by the arm, which made me get up and search the room for an intruder; but the sense of presence properly so called came on the next night. After I had got into bed and blown out the candle, I lay awake awhile thinking on the previous night's experience, when suddenly I felt something come into the room and stay close to my bed. It remained only a minute or two. I did not recognize it by any ordinary sense, and yet there was a horribly unpleasant 'sensation' connected with it. It stirred something more at the roots of my being than any ordinary perception. The feeling had something
