y conception of the
extended world of material things. Science is possible because all
transmutations of Energy take place according to definite numerical laws
and ratios. The whole work of Science is to explain every phenomenon in
terms of its definite transmutation of Energy. These definite numerical
laws and processes are characteristic of all Energy transmutation, and
thus regulate the experience of every intelligent being. It is in virtue
of these that our separate systems of knowledge correspond, and that we
are thus presented each with corresponding aspects of one outer world.
The laws which regulate the cerebral changes that accompany
sense-presentation are for me the necessary _a priori_ laws of
perception. It is because these laws operate in common in all brains
that community of intercourse is possible amongst mankind. It is because
of the further fact that the whole of the transmutations of Energy which
constitute physical phenomena compose a numerically inter-related and
regulated system that Science and rational knowledge are possible to the
intellect of man. Our knowledge is what we are obliged to think and
assert regarding experience; but the universality of experience is not
explained merely by the common nature and general laws of Intelligence,
but depends also on the generality of the laws under which the
transmutations of Energy proceed.

We are now, therefore, by the aid of the doctrine of Energy, better able
than before to distinguish accurately between the Ideal and the Real as
contrasted elements in our experience.

My Presentment as a whole consists in the transmutation-processes--in
the sensations, feelings, perceptions, images, ideas--in short, in all
that is going on at the point where (I necessarily express myself in
terms of spatial relations, though in this connection these are
figurative) my sentience and intelligence are developed.

My whole Presentment is, therefore, in one sense subjective, or, as some
would say, ideal. For me, my Presentment is the impression produced on,
the condition established in, my Consciousness in virtue of what is
going on at this so-called point of contact.

What we mean, therefore, by the subjectivity or ideality of the
Presentment is the aspect of energetic transmutations when viewed as
affecting my Consciousness in contrast with their obverse aspect when
viewed as transmutations in the objective system. As my Presentment,
they are all subjective or ide