Note 8 — Chapter IX

Indisputably this law, analogous to the so-called law of the conservation of energy in the physical realm, is in some way connected with it through the fundamental relation of spirit to body, without the connection being clearly established, or shown to be derivable psychophysically from the physical law, since the essence of psychophysical energy itself is not clearly defined. The law must therefore be inferred from facts such as are above mentioned; and, without being exactly and fully proved, it acquires thereby a probability which qualifies it to serve as a basis for such views as are here in question.