Ultimate truth is oneness and the ways to ultimate truth is non-dualistic or Advaitic wisdom. It grants freedom to individuals and does not command it simply tries to lead them from darkness to light. It reveals that there is one Truth.
The ultimate truth or Brahman is one. It is the eternal truth within the soul, the innermost self . Direct knowledge of "Self " can be acquired by one through the Self while realizing the Self. Self- realization is the essence of human existence. Where there is unity, one without a second; there is world of non-duality. One has to seek it as it is, is the supreme goal of life.
Orthodox and pundits have “I know” attitude, therefore, they think others know nothing. They pretend to be listening but they think others are in a primitive people who could not possibly have anything to share with them.” This type of outlook is great obstacle in pursuit of truth. The orthodoxy is greatest hindrance in realizing the non-dualistic or Advaitic truth.
This witness position cannot be taken in the midst of work or activity, because work and activity is part of the mirage.
Adopting the neutral, impersonal point of view of the Witness also helps us transcend form, time and space. In fact, memory of the past, knowledge of the present, and projection into the future require the existence of a consciousness which is in itself outside form, time and space. By learning to view and judge the three states on Witness position can transcend sense of form, time and space, which helps to reduces its grip of duality.
To reduce all the three states as mind. The first effect of this practice is a lessening of the impact of individual experience. In the next stage, one has to train himself to ask where the mind dwell. The answer one arrives at is: in the Self, the consciousness! The three states come and go; what remains after they vanish is the consciousness which contains them. It alone is real.
Meditation remains necessary only in preliminary stages, but meditation is not the means to acquire Self-Knowledge or Brahma Gnana or Atma Gnana. The highest state attainable by yoga is no better than deep sleep. Only path of reason can by itself lead to Realization of ultimate truth or Brahman.