Jesus said, "Know what is in front of your face, and what is hidden from you will be disclosed to you. (THE GOSPEL OF THOMAS- Saying 5)
Sage Sri, Sankara says: one must first know what is before him. If he cannot know that, what else can he know or understand? If he gives up the external world in his inquiry, he cannot get the whole truth.
"Jesus said:-"Those who seek should not stop seeking until they find. When they find, they will be disturbed. When they are disturbed, they will marvel, and will reign over all." (Gospel of Thomas 2)
Sage Sri, Sankara says :- the universe is not real. He says that Brahman and Atman are one. The ultimate and the Absolute Truth is the Self, which is one though appearing as many in different individuals. The individual has no reality. Only the Self is Real; the rest, mental and physical are but passing appearances, then it indicates the form (waking/duality/mind) is unreal the formless is real (soul or consciousness). Therefore, only soul is real because there is no second thing other then soul,which is present in the form of consciousness. .
He also clearly mentions that: The path of religion, path of yoga and the path of wisdom were intended for different classes of people. The wisdom is for the advanced seekers of truth. It deals with the nature of the ultimate Truth and Reality. It is meant for superior aspirants who have inner urge to know the truth and it is not for those who are immersed in earthly desires.
The scientists now concluded that you are not the brain (body). Consciousness requires the joint operation of brain, body and world. "You are not your brain. The brain, rather, is part of what you are."
The Biology of Consciousness
by Alva Noë. Hill and Wang, 2009
Alva Noe, a University of California, Berkeley, philosopher and cognitive scientist, argues that after decades of concerted effort on the part of neuroscientists, psychologists and philosophers "only one proposition about how the brain makes us conscious ... has emerged unchallenged: we don't have a clue." The reason we have been unable to explain the neural basis of consciousness, he says, is that it does not take place in the brain. Consciousness is not something that happens inside us but something we achieve it is more like dancing than it is like the digestive process. To understand consciousness the fact that we think and feel and that a world shows up for us we need to look at a larger system of which the brain is only one element. Consciousness requires the joint operation of brain, body and world. "You are not your brain. The brain, rather, is part of what you are."
Thus, it is going in the right direction in its invention and one day it will declare that everything is consciousness, which Shankar declared 1200 years back –everything is Ataman- because Ataman is in the form of consciousness. Thus we have to know the fact that the Buddha, Goudpad and Sri,Sankara are not only reformers but also the greatest scientists. Since the original thesis has been lost in the labyrinths of philosophy and mutilated by pundits and priest craft, it becomes very difficult understand and assimilate the wisdom expounded by the great masters. In addition, the conservativeness of the scholars will not allow any research other than playing with the words, which suits the mass mindsets, because of their egocentric outlook. All the add-ons have to be deleted, to understand and assimilate the real fragrance of the wisdom expounded by the great masters. It is hurricane task. Thus, it is no use going through all the scriptures, when there is a direct path to nondual truth. The same time and effort can be used to reach the nondual destination ,which lesser time and effort.
Thus, self-knowledge 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 nondual truth. Therefore, there is no need to convince anyone other then our own-self to get the firm conviction. I am not trying to prove my views, but it is for you to prove yourself to know what is truth? and what is untruth to assimilate the self -knowledge.