This was precisely my teaching in the first book I ever wrote.  I was ridiculed for it, of course,—­and I was told that there was no ‘spiritual’ force in electricity.  I differ from this view; but ‘radio-activity’ is perhaps the better, because the truer term to employ in seeking to describe the Germ or Embryo of the Soul, for—­ as scientists have proved—­“Radium is capable of absorbing from surrounding bodies some unknown form of energy which it can render evident as heat and light.”  This is precisely what the radio-activity in each individual soul of each individual human being is ordained to do,—­to absorb an ’unknown form of energy which it can render evident as heat and light.’  Heat and Light are the composition of Life;—­and the Life which this radio-activity of Soul generates in itself and of itself, can never die.  Or, as I wrote in “A Romance of Two Worlds “—­“Like all flames, this electric (or radiant) spark can either be fanned into a fire, or allowed to escape in air,—­it can never be destroyed.”  And again, from the same book:  “All the wonders of Nature are the result of light and heat alone.”  Paracelsus, as early as about 1526, made guarded mention of the same substance or quality, describing it thus:—­“The more of the humour of life it has, the more of the spirit of life abounds in that life.”  Though truly this vital radio-active force lacks all fitting name.  To material science radium, or radium chloride, is a minute salt crystal, so rare and costly to obtain that it may be counted as about three thousand times the price of gold in the market.  But of the action of pure radium, the knowledge of ordinary scientific students is nil.  They know that an infinitely small spark of radium salt will emit heat and light continuously without any combustion or change in its own structure.  And I would here quote a passage from a lecture delivered by one of our prominent scientists in 1904.  “Details concerning the behaviour of several radio-active bodies were detected, as, for example, their activity was not constant; it gradually grew in strength, but the grown portion of the activity could be blown away, and the blown away part retained its activity only for A time.  It decayed in a few days or weeks,—­ whereas the radium rose in strength again at the same rate that the other decayed. And so on constantly.  It was as if a new form of matter was constantly being produced, and as if the radio-activity was A concomitant of the change of form.  It was also found that radium kept on producing heat de novo so as to keep itself always a fraction of a degree above the surrounding temperature; also that it spontaneously produced electricity.”