Should we believe blindly anything written in Hindus  scripture? Does reason play any role in interpreting Hindu scripture? This is what Swami Vivekananda has written about Hindu dharma.

Religion is not about belief but about direct perception > >  "There are certain religious facts which, as in external science, have to be perceived and upon them religion will be built. Of course, the extreme claim that you must believe every dogma of a religion is degrading to the human mind. The man who asks you to believe everything, degrades himself, and, if you believe, degrades you too. The sages of the world have only the right to tell us that they have analyzed their minds and have found these facts, and if we do the same we shall also believe, and not before. That is all there is in religion." > > (The Complete Works of Swami Vivekananda, 2:163). > >  "The proof, therefore, of the Vedas is just the same as the proof of this table before me, pratyaksa, direct perception. This I see with the senses, and the truths of spirituality we also see in a superconscious state of the human soul."

(The Complete Works of Swami Vivekananda, 3:253)

Here are some additional quotes on this issue.

Sri Sankara, the famous Advaita philosopher, makes the same point in his commentary on the Bhagavad Gita 18.66:

" ......The appeal to the infallibility of the Vedic injunction is misconceived. The infallibility in question refers only to the unseen force or apurva, and is admissable only in regard to matters not confined to the sphere of direct perceptions etc. ..... Even a hundred statements of sruti to the effect that fire is cold and non-luminous won't prove valid. If it does make such a statement, its import will have to be interpreted differently. Otherwise , validity won't attach to it. Nothing in conflict with the means of valid cognition or with its own statement may be imputed to sruti."(Bhagavad Gita Bhashya of Sri Sankaracharya translated by Dr. A.G. Krishna Warrier).

Yoga Vasishta Ramayan says:

"Though human in origin, an exposition of truth is to be accepted; otherwise even what is regarded as divine revealation is to be rejected. Even a young boy's words are to be accepted if they are words of wisdom; else reject it like straw even if uttered by Brahma the creator." > > (Vasishta's Yoga II-18 translated by Swami Venkatesananda)

Vacaspati Misra, the author of Bhamati, says,

"Even one thousand scriptural statements cannot transform a jar into a piece of cloth".

quoted in Indian Philosophy by Radhakrishnan