Advaitic path of wisdom is neither a teaching nor a theory but it is merely guidance to those who are seriously seeking the ultimate truth or Brahman.+

Advaitic wisdom is nothing to do with Advaitic orthodoxy. As per Sage Sankara, Advaitic orthodoxy is meant for the ignorant populace.

Advaitic wisdom is buried under religion and yoga and other philosophies. The Advaita is hidden by the Dvaita. Advaita is the Soul, which is present in the form of consciousness. Dvaita is the illusory universe.

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

Adyatma is nothing to do with religious sects or creeds and religious beliefs or any philosophy or thinkers teaching. Adyatma is pure spirituality. Knowledge of Atma is Adyatma. Advaita is Adyatma. 

Adyatma is the knowledge of the truth beyond the illusory form, time, and space. Bifurcate religion, yoga, and theoretical philosophy and base the truth on the Athma it is Adyathma.

Adyatma is based on the ultimate truth which is based on the Atman or Spirit, which is the Self.

Sage Sankara's Advaitic wisdom is pure spirituality or Adyathma.

Remember:~

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 and what progress has already been made on the path, and what still remains to be done. It sets up the criterion for Self-judgement. There are millions in search of truth but one in 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 are blocking one from realizing the ultimate truth or Brahman or God in truth.

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.

Lord Krishna confesses that the oldest wisdom of India (Advaitic wisdom) has been lost: people misinterpret and falsify it today as they did then. It is not yoga but the philosophic truth. But nobody knows it. The teachers of philosophy and leaders of mysticism or religion do not want to inquire into truth and have no time for it. (Gita –Chap- IV-v.2)

In Gita Chap.IV where Lord Krishna says: ~ "This yoga has been lost for ages" the word yoga refers to Gnana yoga, not other yogas: the force of the word this is to point this out.

Lord Krishna describes some of the other yogas but devotes this chapter separately to Gnana Yoga. So one sees even in those ancient days people did not care for Advaita; they wanted religion; hence Gnana got lost. That is why Krishna calls it "the supreme secret." Krishna points out that the yoga must-see is "Brahman in action."

Sage Sankara said: ~ Talk as much philosophy as you like, worship as many Gods as you please, observe ceremonies, and sing devotional hymns, but the liberation will never come, even after a hundred aeons, without realizing the Oneness.

The seeker has to realize the Self is not 'I' but the Self is Soul to find liberation from the bondage of the illusion of birth, life, death, and the world (duality). The goal of human life is to find and realize Soul, the Self, which is hidden by ignorance. :~Santthosh Kumaar