Thoughts are nothing to do with the innermost self, which is ever formless because without the form, time and space the thought will not be formed. The thought rises only to the waking entity or dream entity. Without the waking entity or dream entity the thoughts will not rise. Deeper self-search reveals the fact that the self is neither the waking entity nor the self is the dream entity but the self is the formless soul or consciousness, which witnesses the coming and going of the three states. The three states are nothing to do with the self because they are mere illusion.
Thoughts arise to the person within the waking or dream. Thinker is the form. Without the form the thinking is an impossibility. Thus thinker and the thoughts are part of the known. The witness of the knower and known is formless.
Thoughts and thinker are nothing to do with the formless witness. The witness is that witnesses the thoughts and thinker together and remains always in the within the waking or dream as their formless substance.
People think that, more they think, the more they will get; but it is really an error. It remains only a thought and gives them back only thoughts. Anything seen, observed, cannot be the Self or the Witness.
Consciousness is the substance and the witness of the duality. The duality is present in the form of mind. The mind is present in the form of the universe. The universe appears as waking or dream and diapers as deep sleep. The one which is aware of the coming and going of the three states is neither the waking entity nor the dream entity but the formless soul, which is present in the form of consciousness. When the soul becomes aware of its formless non-dual true nature in the midst of duality it is called self –awareness. It is foolish to limit the consciousness only to duality because the consciousness pervades all the three states
When one analyzes he finds the fact that the ‘I’ is mind and mind is present in the form of the universe and the universe appears as waking or dream and disappears as deep sleep.
Ego is physical mind and it is in the form of individual experience, feelings thoughts and sensations together.
Eradicating the ignorance completely is necessary. And this is possible only through self-knowledge or Brahma Gnana or Atma Gnana. Thus, there is no other road to freedom other than Gnana. There is no other entrance other than except Gnana. The ignorance will vanish only when the non-dual wisdom dawns.
That is why Sri Sankara, indicated in Bhaja Govindam says: - [Jnana Viheena Sarva Mathena Bajathi na Muktim janma Shatena] - one without knowledge does not obtain liberation even in a hundred births, no matter which religious faith he follows.
Then it is no use going roundabout way, trace the Brahman which is the formless substance and the witness of the universe, which is in the form of mind. By tracing the source of the mind or universe one will be able to realize the Brahman.
Self-knowledge or Brahma Gnana or Atma Gnana is meant only for those who have intense urge, and courage to accept the truth with humility and reject the untruth. Since people start comparing with their scriptural knowledge, it becomes impossible to assimilate and realize the non-dual truth. Therefore, there is no need to convince anyone other than our own-selves to get the firm conviction.