(Linga-Sarira in Theosophy, Kama-Rupa in Neo-Theosophy)

"Why, she confounds 'Soul and Spirit,' refuses to discriminte between the animal and spiritual Egos the Jiv-atma (or Linga-Shirir) and the Kama-Rupa (or Atma-Rupa), two as different things as body and mind, and - mind and thought are!" (Mahatma Letters, p. 46, #9)

"Linga-Sarira: the inert vehicle or form on which the body is moulded; the vehicle of Life. It is dissipated very shortly after the disintegaration of the body." (Secret Doctrine II, p. 593)

Neo-Theosophy:

"The desire nature of the astral body provides a delicate instrument of cognition. Evil begins when the desire elemental dominates and dispossesses for the time the Ego. A natural desire then becomes a craving, and the astral body gets out of control. When a man loses his temper, so that for the time he is not showing a soul's attributes, but those of a wild beast, he has for the time reverted to an early state of evolution, dragged thereto by the astral body which he cannot control. What we have to understand is that we are not the habits of the desire elemental of the astral body, but are to search, for our soul's purpose, such aptitudes in it as are useful for us." (C. Jinarajadasa, First Principles of Theosophy, p. 105) [17]

"While the man is what we call alive and awake on the physical earth he is limited by his physical body, for he uses the astral and mental bodies only as bridges to connect himself with his lowest vehicle. One of the limitations of the physical body is that it quickly becomes fatigued and needs periodical rest. Each night the man leaves it to sleep, and withdraws into his astral vehicle, which does not become fatigued and therefore needs no sleep. During this sleep of the physical body the man is free to move about in the astral world..." (C. W. Leadbeater, Textbook of Theosophy, pp. 61-2) [18]