This necessity of a Guru in the study of the Upanishad is unavoidable, mainly because the Upanishads, though written to define and explain the Eternal and Infinite Truth, have succeeded in doing so only through their word-implications.
It does not give so much a definition through the direct meaning of the words used, as much as description of the Truth by the suggestiveness of the words and terms employed.
A mere literal word-meaning, however exhaustive it may be, cannot give the student the true wisdom of the Upanishads.
Upanishads do not claim that they define Truth through the finite words employed.
But the words have their wealth of suggestiveness and it is by making use of these that the Rishis have succeeded in explaining the Inexplicable --- in defining the Infinite with finite words.
Hence the necessity for a guide to explain to us the exact suggestive import of the words used.
To be continued ...
Satsangam-Chinmaya Mission- Florida-USA.