The Self is one and the Self is the Soul, which is present in the form of consciousness.+

Many Soul theories are based on the dualistic perspective. The duality is merely an illusion. Thus, all dualistic theories are falsehood because they are based on the false self (ego) within the false experience.

If the whole universe in which we exist is created out of single stuff then the many Souls within the universe are also created out of single stuff. That single stuff is the Soul, which is present in the form of consciousness. 

The Upanishads say in effect that ~ if you believe that the Soul is one and God (Brahman) is another you cannot understand Truth.

Brihad Upanishad: ~ “If you think there is another entity, whether man or God there is no truth."

The Self is one and the Self is the Soul, which is present in the form of consciousness. 

The Soul is not limited to an individual. The individuals are many but the Soul is one. The individual exists within the universe. The Soul is the cause of the universe and it itself is uncaused. 

The Soul is not within the human body. The universe is created out of single stuff. That single stuff is the Soul, which is present in the form of consciousness. 

Thus, whatever universe contains is bound o be the Soul, which is present in the form of the consciousness.

The dream world, the dream people appeared together and disappeared together and disappear together. Similarly, the waking world and waking people appeared together and disappear together. 

Thus, the dream is created out of single stuff and that stuff is the Soul, which is present in the form of consciousness. In the same way, the waking experience also created out single stuff. And that single stuff is the consciousness. 

The Soul, which is present in the form of consciousness is the cause of the three states and it itself is uncaused. The many soul theories are religious and yogic fable based on the false self(ego) and false experience (waking).

Knowledge of the single stuff is Self-knowledge or Brahma Gnana or Atma Gnana.

Like an ornament made from gold is Gold, which is born out of consciousness is consciousness. Like gold is the permanent thing, in ornaments made of gold, similarly, the mind, which is in the form of the universe is born out of consciousness, is consciousness in its essence.

Deeper self-search reveals that you are not the Self, the world in which you exist is the Soul, which is present in the form of consciousness, but consciousness is specifically not an entity or identity or a thing within the world in which you exist. But it is the cause of the world in which you exist and it itself is uncaused.

The Soul is hidden by the world in which you exist. The nature of the Soul is the formless, timeless and spaceless existence.

Thus, it is necessary to realize the world in which you exist is created out single stuff, which is consciousness. Consciousness is the ultimate truth or Brahman or God in truth. Thus, God in truth alone is real; the world in which you exist is merely an illusion created out of consciousness. :~ Santthosh Kumaar