"The voyages of the maritime nations and the caravans of the nomads of Asia and Africa, having given them a knowledge of the earth from the Fortunate Islands to Serica, and from the Baltic to the sources of the Nile, the comparison of the phenomena of the various zones taught them the rotundity of the earth, and gave birth to a new theory. Having remarked that all the operations of nature during the annual period were reducible to two principal ones, that of producing and that of destroying; that on the greater part of the globe these two operations were performed in the intervals of the two equinoxes; that is to say, during the six months of summer every thing was procreating and multiplying, and that during winter everything languished and almost died; they supposed in Nature two contrary powers, which were in a continual state of contention and exertion; and considering the celestial sphere in this view, they divided the images which they figured upon it into two halves or hemispheres; so that the constellations which were on the summer heaven formed a direct and superior empire; and those which were on the winter heaven composed an antipode and inferior empire. Therefore, as the constellations of summer accompanied the season of long, warm, and unclouded days, and that of fruits and harvests, they were considered as the powers of light, fecundity, and creation; and, by a transition from a physical to a moral sense, they became genii, angels of science, of beneficence, of purity and virtue. And as the constellations of winter were connected with long nights and polar fogs, they were the genii of darkness, of destruction, of death; and by transition, angels of ignorance, of wickedness, of sin and vice. By this arrangement the heaven was divided into two domains, two factions; and the analogy of human ideas already opened a vast field to the errors of imagination; but the mistake and the illusion were determined, if not occasioned by a particular circumstance. (Observe plate Astrological Heaven of the Ancients.)