(13) The Great Mental Plane comprises those forms of "living things" known to us in ordinary life, as well as certain other forms not so well known except to the occultist. The classification of the Seven Minor Mental Planes is more or less satisfactory and arbitrary (unless accompanied by elaborate explanations which are foreign to the purpose of this particular work), but we may as well mention them. They are as follows: 1. The Plane of Mineral Mind 2. The Plane of Elemental Mind (A) 3. The Plane of Plant Mind 4. The Plane of Elemental Mind (B) 5. The Plane of Animal Mind 6. The Plane of Elemental Mind (C) 7. The Plane of Human Mind

(41) According to the secret doctrine of the Chaldeans, the universe is divided into four states of being (planes or spheres): archetypal, intellectual, sidereal, and elemental. Each of these reveals the others; the superior controlling the inferior, and the inferior receiving influence from the superior. The archetypal plane was considered synonymous with the intellect of the Triune Divinity. Within this divine, incorporeal, and eternal sphere are included all the lower manifestations of life-all that is, has been, or ever shall be. Within the Kosmic Intellect all things spiritual or material exist as archetypes, or divine thought-forms, which is shown in the Table by a chain of secret similes.

(7) There are many planes of Being--many sub-planes of Life--many degrees of existence in the Universe. And all depend upon the advancement of beings in the scale, of which scale the lowest point is the grossest matter, the highest being separated only by the thinnest division from the SPIRIT of THE ALL. And, upward and onward along this Scale of Life, everything is moving. All are on the Path, whose end is THE ALL. All progress is a Returning Home. All is Upward and Onward, in spite of all seemingly contradictory appearances. Such is the message of the Illumined.

(15) The Plane of Elemental Mind (A) comprises the state or condition, and degree of mental and vital development of a class of entities unknown to the average man, but recognized to occultists. They are invisible to the ordinary senses of man, but, nevertheless, exist and play their part of the Drama of the Universe. Their degree of intelligence is between that of the mineral and chemical entities on the one hand, and of the entities of the plant kingdom on the other. There are seven subdivisions to this plane, also.

(9) The Great Physical Plane, and its Seven Minor Planes, is that division of the phenomena of the Universe which includes all that relates to physics, or material things, forces, and manifestations. It includes all forms of that which we call Matter, and all forms of that which we call Energy or Force. But you must remember that the Hermetic Philosophy does not recognize Matter as a thing in itself, or as having a separate existence even in the Mind of THE ALL. The Teachings are that Matter is but a form of Energy--.that is, Energy at a low rate of vibrations of a certain kind. And accordingly the Hermetists classify Matter under the head of Energy, and give to it three of the Seven Minor Planes of the Great Physical Plane.

(20) The Plane of Human Mind, in its seven sub-divisions, comprises those manifestations of life and mentality which are common to Man, in his various grades, degrees, and divisions. In this connection, we wish to point out the fact that the average man of today occupies but the fourth sub-division of the Plane of Human Mind, and only the most intelligent have crossed the borders of the Fifth Sub-Division. It has taken the race millions of years to reach this stage, and it will take many more years for the race to move on to the sixth and seventh sub-divisions, and beyond. But, remember, that there have been races before us which have passed through these degrees, and then on to higher planes. Our own race is the fifth (with stragglers from the fourth) which has set foot upon The Path. And, then there are a few advanced souls of our own race who have outstripped the masses, and who have passed on to the sixth and seventh sub-division, and some few being still further on. The man of the Sixth Sub-Division will be "The Super-Man"; he of the Seventh will be "The Over-Man."

(2) For the purpose of convenience of thought and study, the Hermetic Philosophy considers that the Universe may be divided into three great classes of phenomena, known as the Three Great Planes, namely: 1. The Great Physical Plane. 2. The Great Mental Plane. 3. The Great Spiritual Plane.

(11) The Plane of Matter (A) comprises the forms of Matter in its form of solids, liquids, and gases, as generally recognized by the text-books on physics. The Plane of Matter (B) comprises certain higher and more subtle forms of Matter of the existence of which modern science is but now recognizing, the phenomena of Radiant Matter, in its phases of radium, etc., belonging to the lower sub-division of this Minor Plane. The Plane of Matter (C) comprises forms of the most subtle and tenuous Matter, the existence of which is not suspected by ordinary scientists. The Plane of Ethereal Substance comprises that which science speaks of as "The Ether", a substance of extreme tenuity and elasticity, pervading all Universal Space, and acting as a medium for the transmission of waves of energy, such as light, heat, electricity, etc. This Ethereal Substance forms a connecting link between Matter (so-called) and Energy, and partakes of the nature of each. The Hermetic Teachings, however, instruct that this plane has seven sub-divisions (as have all of the Minor Planes), and that in fact there are seven ethers, instead of but one.

(4) In short, the Three Great Planes may be regarded as three great groups of degrees of Life Manifestation. While the purposes of this little book do not allow us to enter into an extended discussion of, or explanation of, the subject of these different planes, still we think it well to give a general description of the same at this point.

(23) All that we can say is that the Seven Minor Planes of the Great Spiritual Plane (each Minor Plane having its seven sub-divisions) comprise Beings possessing Life, Mind and Form as far above that of Man of to-day as the latter is above the earth-worm, mineral or even certain forms of Energy or Matter. The Life of these Beings so far transcends ours, that we cannot even think of the details of the same; their minds so far transcend ours, that to them we scarcely seem to "think," and our mental processes seem almost akin to material processes; the Matter of which their forms are composed is of the highest Planes of Matter, nay, some are even said to be "clothed in Pure Energy." What may be said of such Beings?