Quotation and authority from others on non-duality should come only after verified and convinced by use of reason based on facts, and then only may he can quote quotations in order to show that others have reached the same conclusion and it is universally applicable without any contradiction. But when people quote very extensively it is because of their inferiority complex.
One must indulge in deeper self-search to "grasp the truth and not merely repeat the words of great thinkers.
How do I know what they says is the truth? This question must come to seeker whenever one reads or here from quoted of the great philosophers or thinkers.
Some thinkers say that truth is known only by intuition. This is wrong because it is known by soul-centric Reason.
It is impossible to know what one has seen by the intuition which he praise as the highest faculty, is truth.
All the doubts get cleared, that is the doubts on every question by soul-centric reason . the non-dual destination cannot be reached if one has not begun by having doubts and asking questions and demanding proofs. Only by soul-centric reason based on soul as self, all the doubts and confusion gets cleared.
To overcome doubt by the sword of non-dual wisdom, it does not mean that one should give up his doubt, but that he should keep on thinking about his doubts until they are solved through deeper reasoning; that he should not stop until ultimate end is reached.
Ultimate truth is the enemy, of yogis, mystics and religious gurus because it pries into the truth, the source and the validity of the knowledge they claim to have. Therefore, it is the most difficult part of the pursuit of truth.
The ‘ego’ is supreme in every human being, and lies at the bottom of all their ignorance, mistakes and misunderstanding. Everyone thinks "He knows". But he knows only what he believes from his inheritance and his accumulated knowledge, which he accepted as truth. But he is unaware whether what he accepted as truth is truth or not.
People think they know the ultimate truth because it is their experience." None stops to doubt or to understand, or to inquire as to what is a fact, or what is the definition of experience. Only the dullards takes the simplest path, that of the uninquiring mind, because the other way, the search for truth, is hard and difficult and laborious.
The path to the unrevealed is steady and slow, and it is difficult tread the path for those who base themselves on the waking entity or ego . But for whom ultimate truth is the supreme goal, for those who become aware of the fact that, the soul is the true self for them the cycle of birth, life and death world becomes mere mirage.
People have got sheepish mentality, and accept statements as merely because they are uttered by god men or their guru. They are not receptive to Self-Knowledge or Brahma Gnana or Atma Gnana .
In the confusing multiplicity of doctrines, each has its own theory, one does not have time to think and inquire if it be true. Yet doubt is the fist step to knowledge for the thoughtful. Seeker of truth should never be satisfied with mere skepticism, have the hope that his doubt will be solved, and move forward. Reason based on the soul as self tells one what is real and what is unreal, what should be followed and what let alone.
Seeker should pursue this quest until his questions will be answered, until his obstacles in assimilating the truth will vanishes and his doubts will be solved.
Truth seekers should not start his quest with idea of God. They do not know whether there is God or not. There is no proof. If anyone mentions God then they must prove his existence. They simply assume the existence of God on their inherited belief.