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

A well-directed Self-search search will lead one to find his nondual destination. Trying to discover the truth on the false self (ego) is going round and round not reaching anywhere. 

One is ignorant and he asserts the awareness, ever-existent consciousness, which exits in all the three states as its formless substance and witness.   And it is also apart from the three states.  The witness is formless and it is not an entity and identity within the waking or dream. 

Self-knowledge or Brahma Gnana or Atma Gnana is the destroyer of ignorance.  The Soul or consciousness is the innermost Self is the Guru and the God, the all-pervading principle and the cause of all three states and it itSelf is uncaused.

 The ‘Self is not you. The ‘Self’ is not the world, in which you exist. The ‘Self is the Soul, which is present in the form of the consciousness.

The ‘Self’ is the cause if the world in which you exist and it itself is uncaused.  The ‘Self ‘is nothing to with the world in which you exist because the ‘Self’ is the ever formless, timeless and spaceless existence.  

The ‘Self is the Soul, which is present in the form of consciousness.  Thus the world in which you exist is merely an illusion created out of the consciousness.

The ego, thoughts the world in which we exist is created out of single stuff.  That single stuff is consciousness.   Knowledge of the single stuff is Self-knowledge or Brahma Gina or Atma Gnana.

 The world in which we exist is the product of ignorance. When ignorance vanishes then the unreal nature of the world in which we exist is exposed.

When the unreal nature of the world in which we exist is exposed then the ego, thoughts, and whatever is seen, known, believed and experienced within the unreal world is bound to be an illusion.

 Thus, it is necessary to realize the one which is born, lives and dies is not the ‘Self’ because the ‘Self is the birthless and deathless. The ‘Self’ is birthless and deathless because it is formless, timeless and spaceless existence.

Only when you realize the Self is not you but the Self is the Soul then you will realize the world in which you exist is mere an illusion is created out of the Soul, which is present in the form of consciousness.  

Thus, everything is consciousness, which is real and eternal.  Thus, the consciousness is the ultimate truth or Brahman.  The world in which you exist is nothing to do with the Soul, the ‘Self’  because the world in which you exist is merely an illusion. :~Santthosh Kumaar