The modern science is based on the physical based facts, whereas truth is based on facts of the true existence

People, who have not become firm in their power of reason, quote someone else as authority to support their reasoning because they have not got fullest confidence in their own powers.

When one is certain, he does not need any authority to support or confirm on his own. There is no need for it.  To appeal to others views, indicates pursuit is incomplete.  Scriptures and sages quote can be quoted after deeper verification, only to show they are also indicating at same thing or to show what is blocking their realization.   

The practical life it is not concerned with ultimate truth because the practical life within the practical world is based on the form whereas the ultimate truth is based on the formless soul or consciousness.   Thus conduct and action  oriented orthodox life style is not the means to self-realization.  Seeker has to keep his intuitions and instincts at a distance and he has to stick to the facts derived from deeper self-search.   Soul-centric inquiry, analyses and reasoning means to go to the very end of things.

Sharpness to grasp the non-dual truth is necessary in pursuit of truth. By merely hearing the truth mentioned by a Gnani one will grasp it.  The seeker has to constantly reflect on it too assimilate and realize it.

The seeker has to analyze the three states; and he has to think consistently on it. Exercise his thinking faculty and inquire continually; discrimination is essential; this practice is the only way to understand, assimilate and realize the non-dual truth.

Most people have a complex "I know". Unless one gives up the “I know” business   he can’t get rid of the ideas "which are full of contradictions" to the Truth seeker. But those who do not want the truth do not see the contradictions and are satisfied with their accepted truth are intellectuals who wants to keep satisfying their own ego.

The modern science is based on the physical based facts, whereas truth   is based on facts of the true existence. The pursuit of starts with the physical facts, but carries its inquiry deeper. Seeker has to go more deeply into investigating his own existence facts he becomes a Gnani, automatically, merely by deeper reflection. Mind (universe) merges into soul(consciousness)ultimately and there is no other way for it.

Many people quote non-duality without understanding it really in its highest aspect. One who calls himself a Gnani, but he thinks his command over knowledge of philosophy, religion, yoga, scriptures and quoting citation of the sages by heart, he thinks he is a Gnani.  He does not know that what a scripture says is true or not, because he blindly accepted scriptures without verifying their validity and he quotes them as proof.  Such knowledge without deeper self-search is not wisdom.  Wisdom arises only when indulges in deeper self-search independently without the support of scriptures.

There are conflicting teachings in religious or orthodox  path and one gets confused as to which are true. People are not capable of knowing, which path is true path, because they do not know the proper test of truth.