(1.) The Body, or Rupa.
(2.) Vitality, or Prana-Jiva.
(3.) Astral Body, or Linga-Sarira.
(4.) Animal Soul, or Kama-Rupa.
(5.) Human Soul, or Manas.
(6.) Spiritual Soul, or Buddhi.
(7.) Spirit, or Atma.

The words in italics being equivalents in the Sanscrit language adopted by him for the English terms. This classification stands to this day for all practical purposes, but it is capable of modification and extension. For instance, a later arrangement which places Astral body second instead of third in the category does not substantially alter it. It at once gives an idea of what man is, very different from the vague description by the words “body and soul,” and also boldly challenges the materialistic conception that mind is the product of brain, a portion of the body. No claim is made that these principles were hitherto unknown, for they were all understood in various ways not only by the Hindus but by many Europeans. Yet the compact presentation of the sevenfold constitution of man in intimate connection with the septenary constitution of a chain of globes through which the being evolves, had not been given out. The French Abbé, Eliphas Levi, wrote about the astral realm and the astral body, but evidently had no knowledge of the remainder of the doctrine, and while the Hindus possessed the other terms in their language and philosophy, they did not use a septenary classification, but depended chiefly on a fourfold one and certainly concealed (if they knew of it) the doctrine of a chain of seven globes including our earth. Indeed, a learned Hindu, Subba Row, now deceased, asserted that they knew of a sevenfold classification, but that it had not been and would not be given out.

Considering these constituents in another manner, we would say that the lower man is a composite being, but in his real nature is a unity, or immortal being, comprising a trinity of Spirit, Discernment, and Mind which requires four lower mortal instruments or vehicles through which to work in matter and obtain experience from Nature. This trinity is that called Atma-Buddhi-Manas in Sanscrit, difficult terms to render in English. Atma is Spirit, Buddhi is the highest power of intellection, that which discerns and judges, and Manas is Mind. This threefold collection is the real man; and beyond doubt the doctrine is the origin of the theological one of the trinity of Father, Son, and Holy Ghost. The four lower instruments or vehicles are shown in this table:

Atma,
Buddhi,
Manas,
The Passions and Desires,
Life Principle,
Astral Body,
Physical Body.

These four lower material constituents are transitory and subject to disintegration in themselves as well as to separation from each other. When the hour arrives for their separation to begin, the combination can no longer be kept up, the physical body dies, the atoms of which each of the four is composed begin to separate from each other, and the whole collection being disjointed is no longer fit for one as an instrument for the real man. This is what is called “death” among us mortals, but it is not death for the real man because he is deathless, persistent, immortal. He is therefore called the Triad, or indestructible trinity, while they are known as the Quaternary or mortal four.

This quaternary or lower man is a product of cosmic or physical laws and substance. It has been evolved during a lapse of ages, like any other physical thing, from cosmic substance, and is therefore subject to physical, physiological, and psychical laws which govern the race of man as a whole. Hence its period of possible continuance can be calculated just as the limit of tensile strain among the metals used in bridge building can be deduced by the engineer. Any one collection in the form of man made up of these constituents is therefore limited in duration by the laws of the evolutionary period in which it exists. Just now, that is generally seventy to one hundred years, but its possible duration is longer. Thus there are in history instances where ordinary persons have lived to be two hundred years of age; and by a knowledge of the occult laws of nature the possible limit of duration may be extended nearly to four hundred years.

The visible
physical
man is:
Brain,
Nerves,
Blood,
Bones,
Lymph,
Muscles,
Organs of Sensation
and Action, and Skin,
The unseen
physical
man is:
Astral Body,
Passions and Desires,
Life Principle, (called prana or jiva.)

It will be seen that the physical part of our nature is thus extended to a second department which, though invisible to the physical eye, is nevertheless material and subject to decay. Because people in general have been in the habit of admitting to be real only what they can see with the physical eye, they have at last come to suppose that the unseen is neither real nor material. But they forget that even on the earth plane noxious gases are invisible though real and powerfully material, and that water may exist in the air held suspended and invisible until conditions alter and cause its precipitation.

Let us recapitulate before going into details. The Real Man is the trinity of Atma-Buddhi-Manas, or Spirit and Mind, and he uses certain agents and instruments to get in touch with nature in order to know himself. These instruments and agents are found in the lower Four—or the Quaternary—each principle in which category is of itself an instrument for the particular experience belonging to its own field, the body being the lowest, least important, and most transitory of the whole series. For when we arrive at the body on the way down from the Higher Mind, it can be shown that all of its organs are in themselves senseless and useless when deprived of the man within. Sight, hearing, touch, taste, and smelling do not pertain to the body but to the second unseen physical man, the real organs for the exercise of those powers being in the Astral Body, and those in the physical body being but the mechanical outer instruments for making the coördination between nature and the real organs inside.