e of the cube implies all the other planes and also "the
within," so any plane of manifestation implies the others and also that
"within" which generates them all. Now, if we would make any progress in
the spiritual side of science--and _every_ department of science has its
spiritual side--we must always keep our minds fixed upon this "innermost
within" which contains the potential of all outward manifestation, the
"fourth dimension" which generates the cube; and our common forms of
speech show how intuitively we do this. We speak of the spirit in which
an act is done, of entering into the spirit of a game, of the spirit of
the time, and so on. Everywhere our intuition points out the spirit as
the true essence of things; and it is only when we commence arguing
about them from without, instead of from within, that our true
perception of their nature is lost.

The scientific study of spirit consists in following up intelligently
and according to definite method the same principle that now only
flashes upon us at intervals fitfully and vaguely. When we once realise
that this universal and unlimited power of spirit is at the root of all
things and of ourselves also, then we have obtained the key to the whole
position; and, however far we may carry our studies in spiritual
science, we shall nowhere find anything else but particular developments
of this one universal principle. "The Kingdom of Heaven is _within_
you."

III

I have laid stress on the fact that the "innermost within" of all things
is living Spirit, and that the Science of Spirit is distinguished from
the Science of Matter in that it contemplates Energy under an aspect of
responsive intelligence which does not fall within the scope of physical
science, as such. These are the two great points to lay hold of if we
would retain a clear idea of Spiritual Science, and not be misled by
arguments drawn from the physical side of Science only--the livingness
of the originating principle which is at the heart of all things, and
its intelligent and responsive nature. Its livingness is patent to our
observation, at any rate from the point where we recognise it in the
vegetable kingdom; but its intelligence and responsiveness are not,
perhaps, at once so obvious. Nevertheless, a little thought will soon
lead us to recognise this also.

No one can deny that there is an intelligent order throughout all
nature, for it requires the highest intelligence of our most
highly-