able laws, and though subordinate variations
are infinite and make up the details of my Presentment, the general laws
and conditions according to which all Energy transmutes are definite,
and constitute the general features or qualities of my Experience, and
these are the so-called primary qualities of bodies regarded in the
light of the doctrine of Energy.

The primary quality of extension, in particular, is a conception
resulting from the association of my visual Presentment with my power of
active exertion, and the delusive tendency to regard this quality as in
some sense primarily and fundamentally real is due to the unconscious
recognition of the fact that it is in virtue of my power, or association
as an agent with the energetic system, that I derive a suggestion of the
real world beyond the phenomena which constitute my experience.

I cannot exist without some development of activity. Hence are derived
my conceptions of free space and of resistance between bodies. My
primary sensations are the sensations of touch, and the primary impulse
of thought is to relate these with my active exertions. When sight is
first restored to the blind the first impulse is to regard the new
sensation as a form of touch. Its intellectual suggestiveness is a
development. The system or stream of transmutations in which my
volitional activity principally takes part is that represented by the
operation of the forces of Gravitation and Cohesion; the system which
influences my visual sensations is a quite different series. The changes
in this latter series, by their greater rapidity, enable me to
anticipate the other series, and for this and other reasons I employ
these sensations to signalise and symbolise the transmutations
proceeding in the series with which I am more immediately related as an
active and "willing" agent. All transmutations, if they result in
sensations, must do so by producing changes in the Energy of my
organism, and must therefore be conditioned by the general laws which
regulate the changes which occur there, or, in other words, must be
contained within a self-consistent spatial condition; but the
differences in the characters of visual Space, as it is called, and the
spatial content of my activity, reflect the differences in the series of
energetic transmutations with which they are respectively connected.

We see more clearly, therefore, with the aid of the doctrine of Energy,
the import of the theory of transce