Advaita is the nature of the God, the Self.+

Swami Vivekananda aptly described Sage Sankara’s Advaita as the fairest flower of philosophy that any country in any age has produced.

The Advaitic truth is a rational or scientific truth declared by Bhagwan Buddha and Sage Sankara centuries back, but unfortunately, the original essence of the rational Advaita is lost mainly, because of orthodox adulteration and add-ons, which are based on the ego (waking entity), which is the false self within the false experience (waking).

Advaita is the Soul, the  Self, which is second to none. The Soul, which is present in the form of the Spirit or the consciousness, is the ultimate truth or Brahman or God. Advaita is the nature of God, the innermost Self. Advaita is God. Advaita is the fullness of consciousness.

The seeker has to first indulge in deeper self-search without scriptures and understand and assimilate the Advaitic truth, which leads to self-awareness. Thus, soulcentric thinking, reasoning, and judgment are very much necessary in the pursuit of truth.

Sage Gaudapada:~ The non-dual Atman is realized when the individual self (jiva) is awakened from its ignorance. Atman is unborn, dreamless, sleepless, and motionless and is beyond duality. It is cognition at its purest. It is Brahman- Ayam Atma Brahma, this Atma is Brahma; Thus epitomizing the core of Upanishad teachings.

Remember:~ 

Yajurveda – chapter- 32:~ God is Supreme Spirit.

Vedas and Upanishad confirm the Soul, the innermost Self, is present in the form of the Spirit or the consciousness.

Rig Veda: ~ The Atman (Soul or Spirit) is the cause; Atman is the support of all that exists in this universe. May ye never turn away from the Atman, the Self. May ye never accept another God in place of the Atman nor worship other than the Atman?" (10:48, 5)

Bible says: ~ “God is a Spirit, and they that worship him must worship him in spirit and in truth. (John 4:24) 

The Spirit is the root element of the universe. The Spirit is present in the form of the Soul, the innermost Self. The Soul is present in the form of consciousness. From the Spirit, the universe comes into existence. In the Spirit, the universe resides. And into the Spirit, the universe is dissolved. The Spirit is the parent of all that is there is. 

Even Bhagavad Gita says: ~ Brahmano hi pratisthaham Brahman (God) is considered the all-pervading consciousness which is the basis of all the animate and inanimate entities and material (Gita 14.27)

If God is a formless Spirit, then how does man know God created the world? There is no proof. If man had seen God creating the world, he could admit it, but how could he have seen God before he came into existence? (i.e. were created).

Advaita is universal. Advaita is not for sale. Do not buy Advaita from the spiritual supermarket. Advaita is the nature of the Soul, the innermost Self. The world in which you exist is 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 awareness when wisdom dawns. 

The Advaita is the Soul is the cause and the support of all that exists in the world in which we exist.

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 there is. 

Remember 

Sage Sri, Sankara says:~ One alone exists, and the rest is all superimposition on that One, due to ignorance.

Through a systematic inquiry into the nature of the mind, which is present in the form of the universe, one arrives at the position that the Soul, the Self, which is present in the form of consciousness, is the ultimate truth or Brahman or God in truth.

The Soul, the Self is constant and, therefore, real, while the phenomena constituting the universe are constantly changing and, therefore, unreal. The final conclusion is that the form, time, and space or the universe are one in essence. That essence is consciousness. Thus, no second thing exists other than consciousness.

The seeker of truth has to take into account all three states of our existence, which are waking, dream, and deep sleep ~ in waking or dream one experiences duality, and in deep sleep, there is only non-duality. To obtain a complete picture of our existential reality, we need to include evidence from all three states. This is the phenomenology of consciousness.

The consciousness is one only, without a second. One experience the manifold universe ignorance ~ led illusion “covers" the One and "projects" the Many. The illusion is the veil on consciousness. In truth, only One, non-dual Reality is all there is. The consciousness is all-pervasive. It is intrinsically Real, self-effulgent, infinite, undifferentiated Pure.

When the Soul, the Self, wakes up to its own formless nondual true nature, the ignorance ceases, and the illusion, which is present in the form of duality never again experienced as reality.

The show of the illusory duality, however, continues, as before. Only our identification with a particular actor's role is gone forever because the Self is in its own awareness.

Self-awareness is Brahmic Bliss! This state is already ours always in deep sleep in a "general" way. When the Self-Knowledge dawns then one is awake to it in a "special" way in the midst of dualistic illusion or Maya.

Atman=Brahman or the Self captures the essence of the immanent (Self) and the transcendent (Brahman) Reality. Humanity has not yet conceived a more lofty conception of its position in the universe.

Advaita only means the negation of duality. The soul, which is present in the form of consciousness, is the ultimate truth or Brahman or God in truth. 

Consciousness is the cause of the origin, maintenance, and withdrawal of the universe Advaita (i.e. non-dual), it means that consciousness transcends all conceptions, positive and negative. Nothing positive can ever be imagined or said about it.

Consciousness is existence absolute, awareness absolute. Existence absolute means that consciousness is not unreal or non-existent. And it is not the unconsciousness. Nothing positive can be stated about consciousness.:~Santthosh Kumaar