In the majority of people, the greater part of the sex force which may legitimately be used through the creative organs is expended for sense-gratification; therefore in such people there is very little of the ascending current shown in diagram 17.
When the aspirant to the higher life begins to curb these excesses more and more, and to devote his attention to spiritual thoughts and efforts, the trained clairvoyant can perceive the unused sex force commencing to ascend. It surges upward in stronger and stronger volume, along the path indicated by the arrows in diagram 17, traversing the heart and the larynx, or the spinal cord and the larynx or both, and then passing directly between the pituitary body and the pineal gland toward the dark point at the root of the nose where the highest state of spirit, has its seat.
These currents do not usually take one of the two paths indicated in the diagram to the entire exclusion of the other, but generally one path is traveled by the greater volume of the sex-currents, according to the temperament of the aspirant. In one who is seeking enlightenment along purely intellectual lines, the current travels particularly over the spinal cord, and only a small part goes over the path through the heart. In the mystic who feels rather than knows, the currents find their way upwards through the heart.
Both are developing abnormally, and each must sometime take up the development he has neglected, so as to become fully rounded. Therefore the aim is to give the body a teaching that will satisfy both classes, although their main efforts are at times expended in reaching the intellectually minded, for their need is the greater on this plane.
This current must be cultivated to some extent before the real esoteric training can begin. It will thus be seen that a moral life devoted to spiritual thought must be lived by the aspirant for a certain length of time before it is possible to commence the work that will give him first-hand knowledge of the super-physical realms and enable him to become, in the truest sense, a helper of humanity.
When the aspirant has lived such a life for a time sufficient to establish the current of spiritual force, and is found worthy and qualified to receive esoteric instruction, he is taught certain exercises, to set the pituitary body in vibration. This is often done through mental and spiritual suggestion and needs no physical teacher. This vibration causes the pituitary body to impinge upon and slightly deflect the nearest line of force (See diagram 17). This, in turn, impinges upon the line next to it, and so the process continues until the force of the vibration has been spent. It is similar to the way in which the striking of one note on a piano will produce a number of overtones, by setting up a vibration in the other strings which are at proper intervals of pitch.
When by the increased vibration of the pituitary body, the lines of force have been deflected sufficiently to reach the pineal gland, the object has been accomplished, the gap between these two organs has been bridged. This is the bridge between the World of Sense and the World of Desire. From the time it is built, man and woman become clairvoyant and able to direct their "gaze" at will. Solid objects are seen both inside and out. To this person space and solidity, hindrances to true observation, have ceased to exist.