Raja-Yoga

21 8 RAjA YOGA.
thing is necessary which moves more slowly, then you
must get to something in which the motion is still
slower, and so on, and you will find no end. There
fore logic compels you to stop somewhere. You must
complete the series by knowing something which never
changes. Behind this never ending chain of motion is
the Purufa, the changeless, the colourless, the pure.
All these impressions are merely reflected upon it, as
rays of light from a camera are reflected upon a white
sheet, painting hundreds of pictures on it, without in
any way tarnishing the sheet.
18. Mind is not self-luminous, being an object.
Tremendous power
is manifested everywhere in
nature, but yet something tells us that it is not selfluminous,
not essentially intelligent. The Puruia
alone is self-luminous, and gives its light to every
thing. It is its power that is percolating through all
matter and force.
19. From its being unable to cognise two things at
the same time.
If the mind were self-luminous it would be able to
cognise everything at the same tfme, which it
cannot.
If you pay deep attention to one thing you lose
another. If the mind were self-luminous there would
be no limit to the impressions it could receive. The
Purusa can cognise all in one moment; therefore the
Puruta is self-luminous, and the mind is noL