It would be indeed strange, if, when all the universe is under the governance of fixed laws--laws which regulate the motion of every molecule, no less than the revolutions of suns--laws of such subtle import, as for instance, regulate the transformations of heat, the convertibility and correlation of force; it would be strange, I say, if such laws as these, when they reached the domain of human affairs should pause and leave the world of man alone in purposeless wanderings. [Sidenote: ANALOGIES BETWEEN MAN AND NATURE.] To continue our analogies. As, latent in the atom, or in the mass, there are energies releasable only by heat or friction,--as in charcoal, which holds, locked up, muriatic acid gas equivalent to ninety times its volume; or in spongy platinum, which holds in like manner oxygen, equal to eight hundred times its volume; so, latent in every individual, are numberless energies, which demand the friction of society to call them out. Force comprises two elements, attraction and repulsion, analagous to the principles commonly called good and evil in the affairs of human society; take away from mechanical force either of these two oppugnant elements, and there could be neither organism nor life, so without both good and evil in human affairs there could be no progress. If none of the forces of nature are dissipated or lost, and if force can no more be extinguished than matter, and like matter passes from one form into another, we may conclude that intellectual force is never dissipated or lost, but that the potential energies of mind and soul perpetually vibrate between man and nature. Or, again, if, as we have seen, energy of every kind is clothed in matter, and when employed and expended returns again to its place in matter; and if the mind draws its forces from the body, as it appears to do, both growing, acting, and declining simultaneously; and if the body draws its energy from the earth, which is no less possible; then may not intellectual and progressional force be derived from man's environment, and return thither when expended? Every created being borrows its material from the storehouse of matter, and when uncreated restores it again; so every individual born into society becomes charged with social force, with progressional energy, which, when expended, rests with society. Winslow's opinion on this subject is, that "all electric and magnetic currents originate in--are inducted from--and radiate either directly or indirectly out of the globe as the fountain of every form and constituency of mechanical force, and that abstract immaterial mechanical energy, as we have thus far discussed and developed its dual principles, is absolutely convertible through molecular motion into every form and expansion of secondary force, passing successively from heat through electricity, magnetism, etc., and _vice versa_, it follows that this same mechanical energy itself, as hypostatical motive power, must proceed out of the globe also."