Friends, finally the discussion comes back to the subtle body. It is clear from the previous discussions that the world shrinks and reaches the ego. It means that only the ego remains in the form of the transcendental subtle body. Of course, the mundane subtle body also includes intellect, mind, prana and senses. In many places, it has been said that it is made up of only ego, intellect and mind. In many places, Panch Tanmatras and Panch Mahabhutas have also been added to it. All this is fine for the worldly subtle body, but in the transcendental subtle body, all these should not be there. It should only have ego. In many places, this ego has been considered as the causal body. Karma and sanskars are hidden in it, which determine the next birth. Suppose, the transcendental subtle body is made up of mind, intellect and ego. But how can it think and contemplate without the gross body. If it cannot, then what is the need to believe in mind and intellect in it. This is a complex subject.
Let us take a single-celled bacterium. It is the tiniest living creature, which cannot be seen with the naked eye. Let us assume that its soul or its self is a transcendental subtle body. This is because such a small physical body cannot have a perceiving brain. Even scientists have not found any clue about it yet. That bacterium does all the activities of a normal life like a creature with a developed brain like man. It walks, eats, drinks, hunts, fears, runs, mates, produces children, fights, understands friendship and enmity and maintains it, etc. The list is very long. Understand, it does all the things. In some places, it does even more than a man. This means that it has everything along with the soul, ego, intellect, mind, prana, five sense organs, five work organs, five tanmatras and five mahabhutas. But it does not feel all these. So is it necessary to feel all these to have all these? Absolutely not. Meaning that the soul itself behaves like a subtle body. Let us assume that the living soul behaves like this. That is because the living soul is trapped in the darkness of ignorance. It has to evolve. That evolution can only happen through the body. But why does God behave like a microscopic body, He is fully evolved. The inanimate world also behaves like a living being. For example, stars are also born, grow, fight, reproduce, eat, spit, hunt, fight, run away, maintain friendship and enmity, etc. So, do inanimate objects also have a living soul? Of course they do. Sankhya philosophy also says that Prakriti is also eternal, infinite and omnipresent like Purush i.e. God. Meaning this Prakriti is also a living soul. A huge, omnipresent, global or collective living soul. It can also be called the subtle body of Brahma. Brahma also does not feel it. Still the subtle body exists and works. In a way, for the development of the soul, it is necessary to have ego, intellect, mind, prana, ten senses, five tanmatras, and five mahabhutas. Anyway, the ego itself is in the form of the soul. Because all these are necessary, that is why all these elements came together. By their coming together, a body was formed. The soul got attached to it. The soul was already present everywhere and at all times in the form of prakriti. Understand that an imaginary part of it got attached to the newly formed body. That was the first soul. That first body was of a bacterium. Then the body of the bacterium evolved and became the body of insects. Then of fish, frog, then of big animals, monkeys and finally of humans. The subtle body is the same in all. There has been no development in the subtle body. The same senses, the same prana, the same mind, the same intellect etc. This means that for the development of the soul, no other element other than the subtle body is necessary. What definitely happened was that the scope of the subtle body increased in big creatures and humans. Therefore, the development of the soul also accelerated. But the subtle body was the same primordial one. The one thing that is special in the subtle body of man, which is not present in the subtle body of any other living being, is the ability to practice Kundalini Yoga. With this, a man can raise his subtle body so high that Kundalini awakening happens.
Demystifying Kundalini 