Ponder for a while on these types of energy and creatively imagine their effect when, in due course of time and spiritual unfoldment, they can pour unrestrictedly into and through the etheric body of a human being. At present, the etheric body is responsive to energies from:
1. The physical world. These are not principles but are the feeders and controllers of the animal appetites.
2. The astral world, determining the desires, emotions and aspirations which the man will express and go after upon the physical plane.
3. The lower mental plane, the lower mind, developing self-will, selfishness, separateness and the direction and trend of the life upon the physical plane. It is this directive instinct which, when turned to higher matters, eventually opens the door to the higher cosmic etheric energies.
4. The soul, the principle of individualism, the reflection in the microcosm of the divine intention and—speaking symbolically—being to the entire monadic expression that which "stands at the midway point," the instrument of true sensitivity, of responsive ability, the spiritual counterpart of the solar plexus centre which is found at the midway point between that which lies above the diaphragm and that which is found below it.
(Alice A. Bailey, TELEPATHY AND THE ETHERIC VEHICLE,
Lucis Trust 1950)