When there is already a theory in books and same is believed by so many people who have experienced it spiritually.

Oh, okay. The first time I read this I didn't understand what you were going on about, but yes, now I see your point. If someone comes along and tries to tell people that the sky isn't blue, but actually green, in spite of all contrary evidence, that person shouldn't unreasonably expect anyone to give him any attention, or indulge in his delusion.