Quaternary — the fourfold lower self, or man, in the three worlds. There are various divisions of this, but perhaps for our purpose the best is to enumerate the four as follows:
2. Emotional or karmic body.
3. Prana, or the Life Principle.
4. The etheric body, or the highest division of the twofold physical body.
(Alice A. Bailey "Initiation, Human and Solar")