But the unconscious is never an abstraction, _never to be abstracted_. It is never an ideal entity. It is always concrete. In the very first instance, it is the glinting nucleus of the ovule. And proceeding from this, it is the chain or constellation of nuclei which derive directly from this first spark. And further still it is the great nerve-centers of the human body, in which the primal and pristine nuclei still act direct. The nuclei are centers of spontaneous consciousness. It seems as if their bright grain were germ-consciousness, consciousness germinating forever. If that is a mystery, it is not my fault. Certainly it is not mysticism. It is obvious, demonstrable scientific fact, to be verified under the microscope and within the human psyche, subjectively and objectively, both. Of course, the subjective verification is what men kick at. Thin-minded idealists cannot bear any appeal to their bowels of comprehension. We can quite tangibly deal with the human unconscious. We trace its source and centers in the great ganglia and nodes of the nervous system. We establish the nature of the spontaneous consciousness at each of these centers; we determine the polarity and the direction of the polarized flow. And from this we know the motion and individual manifestation of the psyche itself; we also know the motion and rhythm of the great organs of the body. For at every point psyche and functions are so nearly identified that only by holding our breath can we realize their _duality_ in identification—a polarized duality once more. But here is no place to enter the great investigation of the duality and polarization of the vital-creative activity and the mechanico-material activity. The two are two in one, a polarized quality. They are unthinkably different. On the first field of human conscious—the first plane of the unconscious—we locate four great spontaneous centers, two below the diaphragm, two above. These four centers control the four greatest organs. And they give rise to the whole basis of human consciousness. Functional and psychic at once, this is their first polar duality. But the polarity is further. The horizontal division of the diaphragm divides man forever into his individual duality, the duality of the upper and lower man, the two great bodies of upper and lower consciousness and function. This is the horizontal line.