On the tree of Indian wisdom, there is no fairer flower than the Upanishads and no finer fruit than the Vedanta philosophy.
-Paul Deussen, Outline of the Vedanta System
It is said that each Upanishad contains at least one hidden doctrine. Most of the Upanishads are in the form of the dialogue between a disciple and Guru or God. On request of the disciple , Guru clears the doubts of the disciple by way of a discourse on a specific religious dogma. Hence Upanishads are the spiritual teachings by the enlightened.
The Sanskrit term Upanishad means 'sitting near or under':upa=near, and shad=to sit. Sitting near or under the enlightened for getting the wisdom is the most commonly accepted inte…