According to the Vedanta philosophy, man consists of three substances, so to say. The outermost is the body, the gross form of man, in which are the instruments of sensation, such as the eyes, nose, ears, and so forth. This eye is not the organ of vision; it is only the instrument. Behind that is the organ. So, the ears are not the organs of hearing; they are the instruments, and behind them is the organ, or what, in modern physiology, is called the centre. The organs are called Indriyas in Sanskrit. If the centre which governs the eyes be destroyed, the eyes will not see; so with all our senses. The organs, again, cannot sense anything by themselves, until there be something else attached to them. That something is the mind. Many times you have observed that you were deeply engaged in a certain thought, and the clock struck and you did not hear it. Why? The ear was there; vibrations entered it and were carried into the brain, yet you did not hear, because the mind was not joined to the organ. The impressions of external objects are carried to the organs, and when the mind is attached to them, it takes the impressions and gives them, as it were, a colouring, which is called egoism, “I”. Take the case of a mosquito biting me on the finger when I am engaged in some work. I do not feel it, because my mind is joined to something else. Later, when my mind is joined to the impression conveyed to the Indriyas, a reaction comes. With this reaction I become conscious of the mosquito. So even the mind joining itself to the organs is not sufficient; there must come the reaction in the form of will. This faculty from which the reaction comes, the faculty of knowledge or intellect, is called “Buddhi” First, there must be the external instrument, next the organ, next the mind must join itself to the organ, then must come the reaction of intellect, and when all these things are complete, there immediately flashes the idea, “I and the external object”, and there is a perception, a concept, knowledge. The external organ, which is only the instrument, is in the body, and behind that is the internal organ which is finer; then there is the mind, then the intellectual faculty, then egoism, which says, “I” — I see, I hear, and so forth. The whole process is carried on by certain forces; you may call them vital forces; in Sanskrit they are called Prâna. This gross part of man, this body, in which are the external instruments, is called in Sanskrit, Sthula Sharira, the gross body; behind it comes the series, beginning with the organs, the mind, the intellect, the egoism. These and the vital forces form a compound which is called the fine body, the Sukshma Sharira. These forces are composed of very fine elements, so fine that no amount of injury to this body can destroy them; they survive all the shocks given to this body. The gross body we see is composed of gross material, and as such it is always being renewed and changing continuously. But the internal organs, the mind, the intellect, and the egoism are composed of the finest material, so fine that they will endure for aeons and aeons. They are so fine that they cannot be resisted by anything; they can get through any obstruction. The gross body is non-intelligent, so is the fine, being composed of fine matter. Although one part is called mind, another the intellect, and the third egoism, yet we see at a glance that no one of them can be the “Knower”. None of them can be the perceiver, the witness, the one for whom action is made, and who is the seer of the action. All these movements in the mind, or the faculty of intellection, or egoism, must be for some one else. These being composed of fine matter cannot be self-effulgent. Their luminosity cannot be in themselves. This manifestation of the table, for instance, cannot be due to any material thing. Therefore there must be some one behind them all, who is the real manifester, the real seer, the real enjoyer and He in Sanskrit is called the Atman, the Soul of man, the real Self of man. He it is who really sees things. The external instruments and the organs catch the impressions and convey them to the mind, and the mind to the intellect, and the intellect reflects them as on a mirror, and back of it is the Soul that looks on them and gives His orders and His directions. He is the ruler of all these instruments, the master in the house, the enthroned king in the body. The faculty of egoism, the faculty of intellection, the faculty of cogitation, the organs, the instruments, the body, all of them obey His commands. It is He who is manifesting all of these. This is the Atman of man. Similarly, we can see that what is in a small part of the universe must also be in the whole universe. If conformity is the law of the universe, every part of the universe must have been built on the same plan as the whole. So we naturally think that behind the gross material form which we call this universe of ours, there must be a universe of finer matter, which we call thought, and behind that there must be a Soul, which makes all this thought possible, which commands, which is the enthroned king of this universe. That soul which is behind each mind and each body is called Pratyagâtman, the individual Atman, and that Soul which is behind the universe as its guide, ruler, and governor, is God.
The next thing to consider is whence all these things come. The answer is: What is meant by coming? If it means that something can be produced out of nothing, it is impossible. All this creation, manifestation, cannot be produced out of zero. Nothing can be produced without a cause, and the effect is but the cause reproduced. Here is a glass. Suppose we break it to pieces, and pulverise it, and by means of chemicals almost annihilate it. Will it go back to zero? Certainly not. The form will break, but the particles of which it is made will be there; they will go beyond our senses, but they remain, and it is quite possible that out of these materials another glass may be made. If this is true in one case, it will be so in every case. Something cannot be made out of nothing. Nor can something be made to go back to nothing. It may become finer and finer, and then again grosser and grosser. The raindrop is drawn from the ocean in the form of vapour, and drifts away through the air to the mountains; there it changes again into water and flows back through hundreds of miles down to the mother ocean. The seed produces the tree. The tree dies, leaving only the seed. Again it comes up as another tree, which again ends in the seed, and so on. Look at a bird, how from; the egg it springs, becomes a beautiful bird, lives its life and then dies, leaving only other eggs, containing germs of future birds. So with the animals; so with men. Everything begins, as it were, from certain seeds, certain rudiments, certain fine forms, and becomes grosser and grosser as it develops; and then again it goes back to that fine form and subsides. The whole universe is going on in this way. There comes a time when this whole universe melts down and becomes finer and at last disappears entirely, as it were, but remains as superfine matter. We know through modern science and astronomy that this earth is cooling down, and in course of time it will become very cold, and then it will break to pieces and become finer and finer until it becomes ether once more. Yet the particles will all remain to form the material out of which another earth will be projected. Again that will disappear, and another will come out. So this universe will go back to its causes, and again its materials will come together and take form, like the wave that goes down, rises again, and takes shape. The acts of going back to causes and coming out again, taking form, are called in Sanskrit Sankocha and Vikâsha, which mean shrinking and expanding. The whole universe, as it were, shrinks, and then it expands again. To use the more accepted words of modern science, they are involved and evolved. You hear about evolution, how all forms grow from lower ones, slowly growing up and up. This