The atom was a cosmic system, laden with energy; in which heavenly bodies rioted rotating about a centre like a sun; through whose ethereal space comets drove with the speed of light years, kept in their eccentric orbits by the power of the central body. And that was as little a mere comparison as it would be were one to call the body of any multiple-celled organism a “cell state.” The city, the state, the social community regulated according to the principle of division of labour, not only might be compared to organic life, it actually reproduced its conditions. Thus in the inmost recesses of nature, as in an endless succession of mirrors, was reflected the macrocosm of the heavens, whose clusters, throngs, groups, and figures, paled by the brilliant moon, hung over the dazzling, frost-bound valley, above the head of our muffled adept. Was it too bold a thought that among the planets of the atomic solar system⁠—those myriads and milky ways of solar systems which constituted matter⁠—one or other of these inner-worldly heavenly bodies might find itself in a condition corresponding to that which made it possible for our earth to become the abode of life?