These pieces of knowledge, which seemed quite separate, have connected, and it has been confirmed that the path of yoga is the same as the path of spirituality.

In the industry, even if things seem the same on the surface, there are often cases where people are unable or unwilling to understand each other's words and thoughts, and they each go their own way.

Yoga has its own way of expressing things, and spirituality also has its own. However, when you look at each expression, you can see that they correspond to each other in stages.

As for which to take as the basis, I think it would be better to take yoga as the basis. Or, even before that, if you were to introduce a stage of mindfulness or "zone," it would be even more understandable.

First, you work hard and concentrate on whatever it is, whether it's your job or a hobby, and enter the state of "zone" and experience its joy. This is the foundation.

Then, you start yoga, meditate, and your kundalini is activated, and you gain physical and energetic (what yoga calls "prana") vitality, allowing you to live a healthy life in this world. This is quite sufficient, but if you go further, there is a stage of union with your higher self (or guide). This is sometimes referred to as union with Shiva or "samadhi" in some schools of yoga, and while the expression is not fixed, there seem to be similar expressions. In Esoteric Buddhism, there is talk of union with the principal deity, and I think this corresponds to that stage.

After that, the stage of awakening of the "sahasrara" corresponds to the "samadhi" in yoga, or the "Atman" in Vedanta, or "oneness" in spirituality.

In reality, these are not that different, but they use different expressions. Some schools say that "mixing them is not good" or "mixing them will slow down growth," but in my personal opinion, I think that is often due to psychological factors. After all, only a certain number of people can grow to a certain level, so there is no need to attribute the reason to such things. People who can grow will grow no matter what they do, and people who cannot grow will remain at a certain level. In reality, the world of spirituality has a very cruel and immense difference, and for some people, it may be something that should be considered on a scale of 1000 years.

Leaving that aside, when looking at things from a broad perspective, whether it's religion, spirituality, yoga, or anything else, each of them contains a certain degree of truth. However, it seems that none of them are entirely true in themselves, and ultimately, I think that to a certain extent, one needs to grasp the truth for oneself.

Therefore, this is the theory, and theoretically, that's how it is. However, theory is just the beginning, and in reality, it is necessary to actually, specifically, and directly become that state of words.

Even if a specific object, which is the subject of perception, comes to mind, that subjective perception quickly disappears. Because the object as a subject dissolves into emptiness, it means that the subject-object (concept) is the same as emptiness in that state, which is obvious and natural. The book says "primal wisdom," and I think that what that specifically means is to directly recognize it, to perceive it clearly, to see it clearly, and to understand it thoroughly. The book describes how emptiness and manifestation are unified or coexist, but that is naturally true in theory. However, what is truly important is to actually recognize that emptiness and manifestation are truly unified and coexisting as a state of mind. By recognizing it in that state, one truly "understands" it. That, I think, is "primal wisdom."

This is something that I had, to some extent, understood intellectually for quite some time. Before this stage, my understanding was that thoughts disappear, so the object of existence dissolves into emptiness. When explained like that, I thought, "Well, that's true," and I understood it to some extent. However, at this stage, even the moment of "disappearance" becomes clear, just like clouds disappearing in the sky, or smoke diffusing and nothing being visible. In the same way, the specific thought, which is the object of the subject, diffuses like a cloud and gradually thins out, disappearing into space (which is also light), and by observing this clearly and as it is, one directly and truly "understands" it.

Thus, when we thoroughly recognize and understand, and when we truly perceive how concrete thoughts dissolve into emptiness, we come to understand the meaning written in books, which says, "Everything is one." This is also referred to as oneness. This seems to be the beginning of true oneness. It is said that if we go beyond this point, dualism will be completely overcome. Indeed, I think that is true. According to the same book, "It is not that the subject and object do not exist, but that samadhi continues and dualism becomes limited." This aligns with my experience.