esent themselves in
such a manner that he knows (it has been shown that by the very nature of
the experience he can know) that the inner perception is not fancy, but is
caused by a psycho-spiritual being belonging to a supersensible world,
just as the ordinary sensation of heat, for example, is caused by an
external physical-sense object.

It is the same with the perception of colour in the supersensible world.
Here we must distinguish between the colour associated with the outer
object, and the inner colour-sensation in the soul. Let us call up the
soul's inner sensation when it perceives a _red_ object in the physical,
outer world of the senses. Let us imagine that we retain a very vivid
recollection of the impression, but that we are looking away from the
object. Let us imagine what we still retain as a memory-picture of the
colour, to be an inner experience. We shall then distinguish between that
which is an inner experience of the colour, and the external colour
itself. These inner experiences differ entirely in their content from
impressions of the outer senses. They bear much more the impress of what
is felt as joy and sorrow than that of normal physical sensation. Now let
us imagine an inner experience of this kind arising in the soul, without
any suggestion from an outer sense object. A clairvoyant may have an
experience of this kind, and may know too, in that case, that it is no
fancy, but the expression of a psycho-spiritual being. Now if this
psycho-spiritual being excites the same impression as does a red object of
the physical-sense world, then that being is red. There will, however,
always be the external impression first, and then the inner experience of
colour, in the case of the physical-sense object; in that of the genuine
clairvoyance of a man of to-day, it _must_ be the contrary,--first the
inner experience, shadowy, like a mere recollection of colour, and then a
picture, growing more and more vivid. The less heed we pay to this
necessary sequence of events the less we are able to distinguish between
actual, spiritual perception and the delusions of fancy (illusion,
hallucination, etc.).

The vividness of the picture in a psycho-spiritual perception of this
kind, whether it remains quite shadowy, like a dim concept, or whether it
impresses us as intensively as an outer object, depends altogether upon
the clairvoyant's stage of development. Now, the general impression
obtained by the clairvoyant of