WHAT is the Supreme Spirit? By what relation to our
experience shall we understand it? This is the subject of enquiry in this Upanishad. As
the Isavasyopanishad is known by its first word, so also is this Upanishad named after its
first word Kena, "By whom?" Neither by the senses nor by human reasoning
can we hope to comprehend the, nature of Brahman.
This is so because the subject, the object
and the means are all identical. It is Brahman by which the understanding itself
functions. The Supreme Spirit is that by which the mind thinks; it is not one of the
concepts that can be conceived by the mind, but it is that by which, indeed, one is able
to think through his mind. It is that which enables the eye to see the ear to hear the
breath to move.