A Guru does not become a Gnani just by mastering the scripture or mastering the Sanskrit language.+

Ignorant become wiser when he realzes with a full and firm conviction that the Self is the Soul and sees the universe in which he exists as an illusion.  A Guru does not become a Gnani just by mastering the scripture or mastering the Sanskrit language. 

Katha Upanishad 1:2:23 The Soul cannot be realized through hearing a scholarly explanation of the discourses, not even by the intellect.

Sage Goudpada: ~ To establish the truth of Non-duality by sheer reasoning alone. He begins by defining "What is real?" "What is unreal?" etc, because that is the right way to discuss or teach. People must first know what they are talking about. (Manduka Karika)

All the philosophies are a mental fabrication. There has never been a single doctrine by which one could enter the true essence of things.

Sage Sankara clearly says:~ Neither studying philosophy nor by worship as many gods nor observe ceremonies nor by singing devotional hymns nor by uttering mantra nor by mastering the scriptures liberation comes without realizing the Oneness. 

Katha Upanishad 1:3:6 “Through the knowledge of the Soul, God, one is pure and clean constantly.” Neither by reading the book nor by taking a bath at a holy place has one become pure. Inner purity is possible when one remains in constant touch with the Soul. Constant Soul Consciousness is the real purity.

All the interpretation of different scriptural scholars is an arena of conflicting interpretations. 

All the gurus of the east and west interpret Advaita from a dualistic standpoint or orthodox point of view and they are still dealing with words, not truth.  It proves that they have not understood the Advaitic wisdom of Sage Sankara.

Criticism can only arise, disagreement can only happen, and contradictory interpretations can only occur when men have failed to grasp Sage Sankara’s Advaitic wisdom. 

It all depends on seekers' capacity to grasp the Advaitic wisdom of Sage Sankara, which is above words and above "interpretation."

Remember that only a few of those who have understood Sage Sankara’s Advaitic wisdom for them contradictory interpretations will never arise. 

There will be no two among them, only one. The only test of the correctness of any interpretation of Sage Sankara is whether it tends towards non-duality or not, whether its author has grasped non-duality or not.

Self-knowledge or Brahma Gnana or Atma Gnana cannot be surmised by merely reading the Vedas and Upanishads.

Ashtavakra:~There is no wisdom whatsoever in the scriptures-just a collection of words.

Remember:~

Sage  Sankara: ~ 'Like a servant who carries a lamp in front of you to find your way, and you have found it, so becomes the Veda to that person. What is the Veda? ~ utterances of those who have known the Truth. Here is one who has known the Truth; why should he or she depend upon the Veda further? Actual realization takes you beyond books. At a certain stage, books become a botheration. The Upanishad itself says that the 'words are only so much of distraction for such minds'

The Upanishad itself:~ vacho viglapanam h tat~ Words are only so much of distraction for such minds'.

Someone posing as a Gnani is not a Gnani. If someone poses himself as a direct disciple of some Guru is not a Gnani. Those who pose themselves as Gnanis are not Gnanis. A Gnani never poses himself as a Guru, a swami, a sadhu or a yogi, or some Guru’s disciple. : ~ Santthosh Kumaar