The reason for this is because in the due comprehension of this subject, that of the Ego functioning in the causal body, comes the ability to work scientifically with the problem of one's own evolution, and to do good work in aiding the evolution of one's brother.
Egoic manifestation is produced through the medium of two fires.
Let us therefore consider somewhat the subject of the egoic Ray and the causal body, viewing it from the standpoint of the microcosm, and leaving the student to work out for himself the analogies where the Logos is concerned, conjuring him to bear in mind that the analogy must ever be drawn with due emphasis upon the fact that all that the human unit can comprehend is the manifestation of the solar Logos in a physical body. In all manifestation, as we well know, we have duality producing triplicity. It will consequently be apparent that, in considering the manifestation of the Ego, we are dealing with the point of central emphasis in man's threefold manifestation. This central blaze inevitably in due course burns up the third fire, or absorbs its essence, and is itself eventually blended with the fire of Spirit and passes out of objective display. I seek here to deal with the subject of the causal body in two different ways - one along the old lines and the other strictly along the lines of occult electrical phenomena.