Sage Sankara does not believe in the bookish knowledge. Sage Sankara denies the authority of any book over any other book.+

Swami Vivekananda: ~ “Advaita encompasses everything. Since Advaita requires heavy-duty intellectualism, it had to be progressively simplified.

Sage Sankara strongly advocated the study of Upanishads, and at the same time cautioned that the study of Upanishads alone would not lead to moksha. In matters of such as spiritual attainment, one’s own realization was the sole authority and it cannot be disputed

Sage  Sankara also said the study of Upanishad was neither indispensable nor a necessary prerequisite for attaining the human goal, the moksha. 

Sage  Sankara pointed out; that even those who were outside the Upanishad fold were as eligible for moksha as those within the fold were. He declared that all beings are Brahman, and therefore the question of discrimination did not arise. All that one was required to do was to get rid of ignorance (Avidya or duality).

Sage  Sankara denies emphatically any one book contains all the truths about Brahman or God, Soul, the ultimate reality.

Sage Sankara does not believe in the bookish knowledge. Sage  Sankara denies the authority of any book over any other book.

It is impossible to realize the Self through bookish knowledge. A feeling of profound respect for the physical Guru is still more difficult to uphold. If you are seeking truth know must not cling to any physical Guru or his teaching.

Sage Sankara himself had often said that his philosophy was based on Shruti, or revealed scripture. This may be because, Sage Sankara addressed the ordinary man, who finds security in the idea of causality and thus, in the idea of God—and Revelation is indispensable to prove the latter. He believed that those of superior intelligence, have no need for this idea of divine causality, and can, therefore, dispense with Shruti and arrive at the truth of Advaita by pure reason.

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.

Sage Sankara says: ~ VC-162- There is no liberation for a person of mere book-knowledge, howsoever well-read in the philosophy of Vedanta, so long as one does not give up the false identification with the body, sense organs, etc., which are unreal.

Tripura Rahasya: ~ Second-hand knowledge of the Self-gathered from books or Gurus can never emancipate a man until its truth is rightly investigated and applied; only direct realization will do that. Realize yourself, turning the mind inward. (18: 89):

If you are trading the Atmic path then remember: ~

Sage Sankara says: ~ There is no need to study the scriptures, to realize the ultimate truth or Brahman

~ then why indulge in studying the scriptures.

Sage Sankara says: ~ There is no need to study philosophy, to realize the ultimate truth or Brahman

~then why indulge in studying philosophy.

Sage Sankara says: ~ There is no need to indulge in rituals, to realize the ultimate truth or Brahman

~then why indulge in rituals.

Sage Sankara says: ~ There is no need to indulge in yoga, to realize the ultimate truth or Brahman

~then why indulge in yoga.

Sage Sankara says the transparent Truth of the Self, which is hidden by the illusion, is to be attained through the instructions of a knower of Brahman, (Gnani)\

~ then why you are sticking a Guru who is not a Gnani.

Sage Sankara says: ~ “The exercise in discrimination between real and unreal and renunciation of the false leads to truth realization.

Atman is Brahman. The Atman is the innermost Self is non-dual because there is no second thing that exists other than the Atman. Atman is present in the form of consciousness. Consciousness is the only true reality, and everything else, which appears as form, time, and space is merely an illusion.: ~ Santthosh Kumaar