The word "spirit" is a metaphorical word derived from the material phenomenon of breath. For the purest and least tangible of all natural phenomena, except perhaps "ether" or electricity, is obviously nothing less than the wind. "The wind bloweth where it listeth," and this elementary "freedom of the wind," combined with our natural association of "breath" and "breathing" with all organic life, accounts for the traditional nobility of the word spirit.

"Spirit" and "life" have become almost interchangeable terms. The modern expression "the life-force" is only a metaphorical confusion of the idea conveyed by the word "spirit" or "breath" with the idea conveyed by the word "consciousness" when abstracted from any particular conscious soul. The use of the term "spirit" as applied to what metaphysical idealists name "the absolute" is the supreme example of this metaphorical confusion.

According to this use of the term "spirit" we have an arbitrary association of the ultimate fact of self-consciousness—a fact drawn from the necessity of thought—with that attenuated and etherial materialism implied in the words "breath" or "breathing" and in the elemental "freedom of the wind." The word "spiritual" is a purer and nobler word than the word "mystical" for the same reason that the word "soul" is a purer and nobler word than the word "spirit."

The historic fact must, however, be recognized that in the evolution of human thought and in the evolution of philosophical systems the word "spirit" has in large measure usurped the position that ought to belong to the word "soul" as the highest and purest expression of what is most essential and important in life.

The history of this usurpation is itself a curious psychological document. But I cannot help feeling that the moment has arrived for reinstating the word "soul" in its rightful place and altering this false valuation.

The word "soul" is the name given by the common consent of language to that original "monad" or concrete unity or living "self" which exists, according to universal experience, "within" the physical body and is the indescribable "substratum" of self-consciousness and the unutterable "something" which gives a real concrete permanence to what we call "personality."

Here also we are confronted by the metaphorical danger, which is a danger springing from the necessity of thought itself; the necessity under which thought labours of being compelled to use sense-impressions if it is to function at all. But though thought cannot exist as thought without the use of sense-impressions it can at least concentrate its attention upon this primal necessity and be aware of it and cautious of it and hypercritical in its use. It can do more than this. It can throw back, so to speak, the whole weight of the mystery and drive it so rigorously to the ultimate wall, that the materialistic and metaphorical element is reduced to a mere gap or space or lacuna in the mind that only a material element can fill and yet that we cannot imagine being filled by any material element which we are able to define.

This is precisely what we have to do with regard to that "vanishing-point of sensation" which is the substratum of the soul. The situation resolves itself into this. The highest, deepest, most precious thing we know or can imagine is personality. Personality is and must be our ultimate synthesis, our final ideal, and the origin of all our ideals. Nothing can be conceived more true, more real, more spiritual than personality.

All conceptions, qualities, principles, forces, elements, thoughts, ideas, are things which we abstract from personality, and project into the space which surrounds us, as if they could be independent of the personal unity from which they have been taken. We are compelled by the inevitable necessity of thought itself, which cannot escape from the world of sense-impressions, to think of personality as possessing for its "substratum" "something" which gives it concrete reality. This "something" which is utterly indefinable, is the last gesture, so to speak, made by the sense-world before it vanishes away.

This "something" which is the substratum of the soul and the thing which gives unity and concreteness to the soul is the thinnest and remotest attenuation of the world of sense-impression. It is far thinner and more remote than the sense-element in our conception of spirit. Why, it may be asked, can we not get rid of this "something" which fills that gap or lacuna in the identity of the soul which can only be thought of in material terms?