It is better not to indulge in scriptures. There is no need of scriptures in pursuit of truth. The mind means duality. When the mind is there duality is there. Duality appears and disappears as waking or dream. When there is no mind then it is non duality. Therefore, deeper understanding is necessary in pursuit of truth. The nature of the true self is formless and non-dual. Since, mind means duality thus it is not the nature of the true self, which is the soul, hence mind is impure. So to get rid of this impure (duality) one has to realize the duality is created, sustained and finally dissolves as soul or spirit. Thus, the conditioning (samskars or conditioning) based on the ego has to be dropped to realize the ever pure self or Atman. Thus there is a need to rectify the seeking base from form to formless in order to understand and assimilate the Self-knowledge or Brahma Gnana or Atma Gnana.
Dual and non dual is state of the self not some philosophy or theory. When the self is in illusion it is present in the form of mind or ’I’ or duality, and when the self is in its formless non-dual nature it is Atman or soul ,which is present in the form of consciousness.
Realization of truth, not just understanding, truly blows up the ignorance which is vital for acquiring the non dual wisdom.
The point is that most of us get stuck in the intellectual understanding, in reciting theoretical mantras and do not move on to experiential realization. Because it is convenient to imagine as one need not inquire and reason, on the true base, which is very difficult and boring. This is a self deception, this is why people who does not want o inquire and reason on the true base get nowhere.
The Seeker has to rely on totality of experience by coordinating the three states, waking dream and deep sleep. All other spiritual paths based on the individual apart from the world. But they do not consider of the fact that man and world exist within the waking. Man and his experience of the world is reality within the waking experience. But the waking experience is myth. The witness of the three states is apart and unaffected and nothing to with the myth which appears and disappears as waking and dream. Therefore, the Atman alone is real and all else is illusion.
Atman the formless substance and witness of the three states itself is alone permanent, the three states (seen) are opposed to it that is transient – such a settled conviction is truly known as discrimination.
Turning away the focus of attention completely from the three states to the formless substance and witness of the three states with lots of patient endurance will help the seeking mind to establish in the Atman or soul, the innermost self.
What is ‘I’? How these three states are created? Who is its creator? Of what material is these three states are made? This is the way of that inquiry, analysis and reasoning on the true base.
Three states are produced by ignorance, and dissolves in the wake of self-Knowledge. Atman is the substance and witness and the true self.
Where there is mind there is form(duality) . Where there is no mind there is no form(non-duality).