I am presuming that you already grasp the necessity for the building of the antahkarana and for this bridging work. It is wise also to accept the fact that we are in a position to begin the definite process of constructing the link or bridge between the various aspects of man's nature, so that instead of differentiation there will be unity, and instead of a fluid, moving attention, directed here and there into the field of material living and emotional relationships, we shall learn to control the mind and to bridge the divisions, and so can direct at will the lower attention in any desired manner. Thus all aspects of man, spiritual and natural, can be focused where needed. This bridging work has in part already been done. Humanity has as a whole already bridged the gap between the emotional astral nature and the physical man.
Average men utilize almost entirely that part of the sutratma which passes through the astral plane.
Their reactions are largely based on desire, and are emotional. Intellectual men utilize the sutratma as it passes through the lower levels of the mental plane, down through the astral to the physical in its two sections. Their activities are energized by mind and not by desire, as in the earlier cases. The power of the Ego can begin to make itself felt. Applicants for initiation and initiates up to the third initiation use both the sutratma and the antahkarana, employing them as a unit.