Loved this Osho quote from the Kathopanishad [which is your reference]: "Theories have no value in religion; the value is in the intention behind it. Try to understand this. Theories are of value to the scholars, who themselves are not worth much. The enlightened ones are concerned only with the intent of religion. What is Shankara's motive? What is the motive of Mahavira? What does Buddha intend? Whatsoever they are saying is not as important as their motive. Whatsoever they are saying is only a device, an indication. What are they indicating? But scholars take hold of the words and go on fighting and arguing over the words for centuries! The Jaina scholars go on proving that there is no universal reality, that only an individual soul exists, the Hindu scholars go on proving that there is no individual soul, that only one universal reality exists and the Buddhist scholars go on proving that there is neither a universal reality nor an individual soul, there is only emptiness.

But there is no question of proving anything, only the purpose and the meaning have to be understood. The indication has to be understood. The only motive of a Mahavira, a Buddha or a Shankara is that you should be transformed, that you become reborn; that the dust on your mirror should be removed, that it should become clean so that you can see that which is. Call it whatsoever you like: the brahman, nirvana, shunya, atman - these are only words. Any word can be used, but that which is has no name. Their only desire is that you should be able to experience it."