Raja-Yoga

44 RjA YOGA.
that are on the same plane see each other. We have
five senses, and we represent Prdna in a
of vibration.
certain state
All beings in the same sU te of vibration
will see each other, but if there are beings who repre
sent Prdna in a higher state of vibration they will not
be seen. We may increase the intensity of light until
we cannot see the light at all, but there may be beings
with eyes so powerful that they can see such light.
Again, if the vibrations are very low, we do not see
light, but there are animals that see it, as cats and
owls. Our range of vision is
only one plane of the
vibrations of this Prdna. Take this atmosphere, for
instance; it is piled up layer on layer, but the layers
nearer to the earth are denser than those above and
as you go higher the atmosphere becomes finer and
finer. Or take the case of the ocean; as you go deeper
and deeper the density of the water increases, and
those animals that live at the bottom of the sea can
never come up, or they will be broken into pieces.
Think of this whole universe as an ocean of ether,
in vibration under the action of Prdna, and that it con
sists of layer after layer of varying degrees of vibra
tion; in the more external the vibrations are less, and
nearer to the centre the vibrations become quicker and
quicker, and each range of vibration makes one plane.
Think of the whole thing as one circle, the centre of
which is perfection the further you get from the centre
;
the slower the vibrations. Matter is the outermost
crust, next comes mind, and spirit is the centre. Then
suppose these ranges of vision are cut into planes, so