It is in the first place the vehicle of the individual soul. It is in the second place the medium of the "spiritual vampirizing" of the invisible planetary spirits. And it is in the third place a living portion of that organic elemental chemistry which is the body of the terrestrial soul. Thus it becomes manifest that that "illusion of dead matter" which fills the human soul with so profound a melancholy is no more than an everlasting trick of the malice of the abyss. And the despair which sometimes results from it is a despair which issues from no "dead matter" but from the terrible living depths of the soul itself. It is from a consideration of the especial kind of melancholy evoked in us by the illusion of "objective deadness" that we are enabled to analyse those peculiar imaginative feelings which sometime or another affect us all. I refer to the extraordinary tenacity with which we cling to our bodily form, however grotesque it may be, and the difficulty we experience in disassociating our living soul from its particular envelope or habitation; and the tendency which we have, in spite of this, to imagine ourselves transferred to an alien body. For the soul in us has the power of "thinking itself" into any other body it may please to select. And there is no reason why we should be alarmed at such an imaginative power; or even associate its fantastic realization with any terror of madness. The invisible entity within us which says "I am I" can easily be conceived as suddenly awakening out of sleep and discovering, to its astonishment, that its visible body has suffered a bewildering transformation. Such a transformation can be conceived as almost unlimited in its humorous and disconcerting possibilities. But no such transformation of the external envelope of the soul, whether into the form of an animal or a plant or a god, need be conceived of as necessarily driving us into insanity. The "I am I" would remain the same in regard to its imagination, instinct, intuition, emotion, self-consciousness and the rest. It would be only "changed" in regard to sensation, which is a thing immediately dependent upon the particular and special senses of the human body. This is a truth to the reality of which the wandering fancies of every human child bear ample witness; not to speak of the dreams of those childlike tribes of the race, who in our progressive insolence we are pleased to name "uncivilized." The deeper we dig into the tissue of convoluted impressions that make up our universe the more vividly do we become aware that our only redemption from sheer insanity lies in "knowing ourselves"; in other words, in keeping a drastic and desperate hold upon what, in the midst of ambiguity and treachery, we are definitely assured of.