And so, just as according to the metaphysical view, the soul disappears in a blur of ideal fatality, according to the scientific view the soul disappears in a nexus of mechanical determinism. As against both these errors, to the complex vision this "soul" within us appears to be something altogether different from the physical body. The experience we have of it, the feeling we have of it, is that it is a definite "something" dwelling "within" the physical body. This revelation with regard to it is as unmistakable as it is difficult to analyze. That it is here, within us, we feel and know; but as soon as we attempt to subject it to any exact scrutiny it seems to melt away under our hands. The situation is indeed a kind of philosophical tragic-comedy; and is only too indicative of the baffling whimsicality of the whole system of things. Contradiction and paradox at the very basis of life mock our attempt to utter one intelligible word about the thing which is the most real of all things to us. We are vividly aware of this mysterious personality within us, "the guest and companion of the body," but directly we attempt to lay hold upon the actual substance of it it seems to vanish into thin air. But at least our complex vision, which is _its_ complex vision, reveals to us the fact of its existence; and with its existence once acknowledged, however impossible analysis of it may be, we are able to give a plain and unequivocal denial to all the impersonal conclusions reached by metaphysic and science. This categorical pronouncement of the complex vision with regard to the "I am I," namely that it is the voice of a living concrete soul within us, is supported historically by an immense weight of human tradition. Belief in the reality of the soul is older and more tenacious than any other human doctrine which our race has ever held. The use of the term "soul" is no more than a bare recognition that behind the consciousness which says "I am I" there is a living entity whose consciousness this is. With this bare recognition the revelation of the complex vision abruptly stops. It stops with that peculiar and disconcerting suddenness with which it seems to be its nature to stop, whenever it reaches the limit of its scope in any direction. It stops here, with regard to the soul, just as it stops when confronted with the conception of limitlessness, both with regard to space and with regard to time. But the soul at least is ours; a fact that cannot be explained away.