Non-duality means not the non-existence of a second thing, but its nonexistence as other than consciousness. One must know it is of the same substance as the objects.
Non dual Truth is possible only in duality when there is both a knower and a known. Hence truth is one’s idea of a thing. Reality is the fact, the thing itself. Truth is used for communication about the reality. Ultimate truth is beyond all doubt and contradiction. It is not assumption or idea but the Reality itself. Hence ultimate truth and ultimate reality are one and the same.
It is impossible to know that God is everywhere. What is God? God cannot exist without duality. In non-dual reality there is no man, no world, and no belief of god. God has no meaning in realm of truth. It is a mere imagination or assumption. Soul, which is in the form of consciousness, is the formless substance and witness of the mind, which appears as waking or dream. The dream is parallel waking experience and waking experience is parallel dream. One cannot prove the existence of any God which is everywhere apart from consciousness. Thus for seeker of truth consciousness, which is ultimate truth itself is God. In non-dual reality neither the universe is reality nor the man nor the idea of god, because there is no second thing exist other than the consciousness because everything is consciousness.
Self- Knowledge is only is true knowledge not the absence of duality. Self -Knowledge cannot destroy the world but it eliminates the ignorance and exposes the unreal nature of the mind or universe.
Non- dual wisdom requires investigate in to the mind, analyzing the mind, which appears as universe, realizing the fact that, the mind rises and subsides from formless source, which is consciousness. The consciousness is the true self. Therefore, one has to learn to judge the truth from the standpoint of the source from where the mind rises and subsides, not from the standpoint of the waking entity, which is the false self.
As one gets convinced, certain, of the truth that the world is nothing but consciousness, and there is no second thing, then he get conviction that, all the three states to be consciousness in the midst of duality. Realizing the truth in the midst of duality is wisdom.
Seeker has to practice thinking that he is neither the doer nor the enjoyer and his existence as a person is limited to the waking experience. Thus neither the waking entity nor the dream entity is the self. The true self is that which witnesses the three states as a whole. When he realizes the waking entity is not the self then he will gradually realize the fact that, whatever is seen as waking /dream is only mirage created out of consciousness. Therefore when he realizes the waking experience is the mirage then he realizes the stuff from the mirage is made, which is consciousness to be real.