Advaita is literally the negation of the Dvaita.+

Sage  Sankara said: Just as the snake is superimposed on the rope, this world and this body are superimposed on Brahman or the Soul, the Self. 

If one gets knowledge of the rope, the illusion of the snake will vanish. Even so, if he gets knowledge of Brahman, the illusion of the body and the world will vanish.

The snake is only an idea: it disappears on inquiry but deeper self-search reveals that the rope is also an idea and its reality will be exposed when wisdom dawns. 

From the ultimate standpoint, in Advaitic reality,  there is neither a snake nor a rope because, from the ultimate standpoint, the duality is merely an illusion created out of the Soul, the Self. 

The Soul is the Self. The Soul is present in the form of consciousness.  Consciousness is the root element of the universe. From consciousness, the universe comes into existence. In consciousness, the universe resides. And into consciousness, the universe is dissolved.  Consciousness is the parent of all that is there.  Consciousness is the only reality, and the universe too but an illusory manifestation. 

The Veda serves only at the starting point. What one has to learn from Veda must be understood through the exercise of reason, as far as reason might go. And what one has understood must be realized in one’s life.  

It is not that one should pore over the ancient scriptures.  There is no need to study first and then realize. One has to realize first then only he will know ‘what is the truth’ and ‘what is untruth’.

Remember:~

Advaita is universal. Advaita is not for sale. Do not buy Advaita from the spiritual supermarket. Advaita is the nature of the Soul, the  Self.  

You and the world in which you exist are created out of single stuff. That single stuff is consciousness. Knowledge of the single stuff is Advaitic wisdom.

Advaitic truth is very simple, but it is very difficult to realize because you have accumulated mental garbage from different sources in the name of Advaita.  

Until you discard all the accumulated knowledge you will never be able to realize the Advaitic truth, which is beyond the form, time, and space. 

The Advaita is the nature of the Soul, the 'Self' shines on its own awareness when wisdom dawns.

The Advaita is the Soul is the cause and the support of all that exists as the world in which we exist. Advaita is the nondual nature of God in truth.

The Advaita is present in the form of consciousness. Advaita is the root element of the universe. 

From the Advaita, the universe comes into existence. In the Advaita, the universe resides. And into the Advaita, the universe is dissolved. The Advaita is the parent of all that is there. 

Remember:~

The world in which we exist is lifeless without the Soul, which is present in the form of consciousness. Ignorance of the truth of our true existence makes us like a stagnant pond of water. Advaitic wisdom is like the flow of the water.

The garbage of religious beliefs dogmas, and superstition is confounded with the human imagination. The great reality of the glory of the religious Gods is hyped and obscured by so much tinsel and commercialism.

Spirituality or Adyathma is not theology.  Advaita is not a philosophy but Advaita is the ultimate truth or Brahman or God. Advaita is Self-knowledge or Brahma Gnana or Atma Gnana or knowledge of the Spirit or God in truth.

The word “Advaita” is one without the second.  Advaita essentially refers to the Atman and the whole existence. Advaita is the fullness of consciousness without the division of form, time, and space.

Theology has nothing to do with spirituality. Advaita is pure spirituality. The theological Advaita has nothing to do with the Advaitic wisdom, which is based on the Spirit or Atman. 

Theological Advaita conceptually has its own doctrine and has nothing to do with the Gnanic Advaita, because, Gnanic Advaita is Self-knowledge or Brahma Gnana or Atma Gnana.

Both approaches are not workable together, because, the theological Advaita is based on the birth entity (ego)   Gnanic Advaita is based on the Atman (Soul). Thus, the theological Advaita has to be discarded without mercy to get Advaitic Gnana.  

“Advaita” is a term used variously to express the unity of reality.  Advaita is unity in diversity.  

The seeker has to begin by defining "What is real?" "What is unreal?,   to establish in Advaitic reality by sheer reasoning alone.   

Reasoning is the right way to realize the truth, which is beyond form, time, and space. People must first know what is the truth? and what is untruth’. 

Sage Sankara’s wisdom is not teaching or philosophy but Advaita is universal wisdom. Advaitic wisdom is neither a teaching nor a theory but it is mere guidance to those who are seriously seeking the ultimate truth or Brahman. Grasp the ultimate truth at any time, at any age, if the seeker has the spiritual maturity and capacity to grasp it. 

Sage Sankara says: ~ VC-47   All the effects of ignorance, root, and branch, are burnt down by the fire of knowledge, which arises from discrimination between these two—the Self and the not-Self.

It really depends on his inborn natural capacity to understand and assimilate it.  Sage Sankara’s wisdom is a Self-examiner, to test oneself to discover how near to Gnana he has approached what progress has already been made on the path, and what still remains to be done.  It sets up a criterion for Self-judgement. There are millions in search of truth but one in a million will be able to grasp it.

Without Sage Sankara, there is no Advaita (nonduality).  Since it was mixed up with orthodoxy there is a lot of confusion. I am highlighting all the obstacles, which is blocking one from realizing the ultimate truth or Brahman. 

There are so many non-dualistic masters of the East and also from the West who expound Advaitic or non-dualistic knowledge but none of them are helpful to reach the ultimate end.

One has to know and realize the Self is the Soul and identify it as his true identity to find liberation from the bondage of the illusion of birth, life, death, and world(duality).   The goal of our life is to find and realize our identity with our Soul, which is our innermost Self. 

Sage Sankara said:~ Neither by the practice of yoga nor philosophy, nor by good works nor by learning, does liberation come, but only through the realization that Atman and Brahman are one in no other way. (1) Vivekachoodamani v 56, pg. 25

To come to a more precise understanding of what non-duality is or might mean, we must return to the original linguistic and philosophic backgrounds from which the word has been translated into English.

If we limit a probe of the meaning of non-duality to Hindu Sanskrit literature, we find that the most frequently used term is “Advaita.

Advaita” is not a religious concept.  Advaita is the nature of the existence hidden by the illusory form, time, and space.   

The seeker has to attempt to rule out from the start a false understanding of reality by a perfect understanding of ‘what is what’.

The Advaita is hidden by the Dvaita. Advaita is the Soul, which is present in the form of consciousness. Dvaita is the universe.

Advaita is basically a denial; it is literally the negation of the Dvaita.  That means whatever remains by negating the universe by realizing the universe is created out of single clay and that clay is the Soul, which is present in the form of consciousness, the hidden truth by Dvaita uncovered.  Consciousness is the cause of the universe and it, itself is uncaused. : ~ Santthosh Kumaar