Forces or Energies found in Nature, naturally occurring.
"A dynamo-electric machine is placed at any given spot; its object, being put in action, is to withdraw from the earth its neutral electricity, to decompose it into its two conditions and to collect, upon accumulators, the electricity thus separated. As soon as the accumulators are charged, the electricity is disposable; that is, our lamps can be lighted. But what is marvelous in all this is that the forces of nature can be transformed at will. Should we not wish for light, we turn a knob and we have sound, heat, motion, chemical action, magnetism. Little seems wanting to create intelligence, so entirely do these accumulated forces lend themselves to all the transformations which their engineer may imagine and desire. But let us consider how greatly superior is our cerebral mechanism. In order to light a theatre we require a wide space, a dynamo-electric machine of many horse-power, accumulators filling many receptacles, a considerable expense in fuel, and clever mechanicians. In the human organism these engines are in miniature, one decimeter cube is all the space occupied by our brain; no wheels, no pistons, nothing to drive the apparatus, we suffice ourselves. In this sense, each of us can say, like the philosopher Biaz:- Omnia mecum porto. Our cerebral organ not only originates motion, heat, sound, light, chemical actions, magnetism, but it produces psychic forces, such as will, reasoning, judgment, hatred, love, and the whole series of intellectual faculties. They are all derived from the same source, and are always identical to each other, so long as the cerebral apparatus remains intact. The variations of our health alone are capable of causing a variation in the intensity and quality of our productions.[Keely, Vibratory Physics - The Connecting Link between Mind and Matter]
All the energies of nature are the results of Divine operations flowing from the fountain of life, and all the forces of nature are the forces of life. [Harmonies of Tones and Colours, Reflections on the Scheme3, page 45]