have been felt in accepting without
qualification the purely Kantian view which regarded it as a category
imposed by the Intelligence upon the otherwise unknowable world of
sense.

The most ardent assertors of the ideality of Space have hitherto
apparently had difficulty in avoiding the tendency to conceive it as the
persistent all-embracing objective content of the thing-in-itself, not
merely of the phenomenon, although the latter only might enter into
Knowledge. The doctrine, however, which presents our conception of Space
as discovered in our activity amid resistant transmutation-processes not
only establishes its ideality but at the same time explains the relation
which its form nevertheless bears to the objective material laws of the
sensible presentation. It liberates the mind from the oppressive
necessity of regarding Space as still somehow objectively extending and
containing the real world. It also relieves an obvious difficulty which
confronts the Philosophy of Schopenhauer in locating those
transcendental forms of the phenomenon which are imposed _a priori_ upon
the presentation, and yet are not to be found in the pure Volition.

Of course, it must never be forgotten that my whole sentient experience
consists primarily of the series of energetic transmutations occurring
at that part of the energetic system which is in immediate vital
relation with my consciousness. It is my experience of active exertion,
of moving, speaking, etc., which gives a suggestion of the real
energetic world. The transmutations of the real Energy of the world
beyond my organism never enter my Consciousness. Transmutations arising
beyond my body only enter the presentation by influencing the cerebral
process. The luminous undulation and the sound-wave must both produce
transmutation of the cerebral Energy in order to affect Consciousness.
Yet the various characters of the transmitted impulses are
distinguishable in the resultant cerebral transmutations. Thus I feel
sensations of hardness, roughness, pain, colour, sound, etc. It is by a
process of mental construction that I associate these with the forms of
my exertional activity, and thus frame my conceptions of real bodies in
the world around me--those which I more directly associate with the
Energy subject to my Volition being conceived as representing my body.
For reasons of convenience, I refer those conceptions chiefly to the
co-ordinated visual presentation, and thus build up m