These childish and savage populations imagined the earth to be flat, supported, I know not how, by its own weight in the air; the sun, moon, and stars to move continually upon a solid vaulted roof called a firmament; and this roof to sustain waters, and have flood-gates at regular distances, through which these waters issued to moisten and fertilize the earth. But how did the sun, the moon, and all the stars reappear after their setting? Of this they know nothing at all. The heaven touched the flat earth: and there were no means by which the sun, moon, and stars could turn under the earth, and go to rise in the east after having set in the west. It is true that these children of ignorance were right by chance in not entertaining the idea that the sun and fixed stars moved, round the earth. But they were far from conceiving that the sun was immovable, and the earth with its satellite revolving round him in space together with the other planets. Their fables were more distant from the true system of the world than darkness from light. They thought that the sun and stars returned by certain unknown roads after having refreshed themselves for their course at some spot, not precisely ascertained, in the Mediterranean Sea. This was the amount of astronomy, even in the time of Homer, who is comparatively recent; for the Chaldæans kept their science to themselves, in order to obtain thereby, greater respect from other nations. Homer says, more than once, that the sun plunges into the ocean--and this ocean, be it observed, is nothing but the Nile--here, by the freshness of the waters, he repairs during the night the fatigue and exhaustion of the day, after which, he goes to the place of his regular rising by ways unknown to mortals. This idea is very like that of Baron Fœneste, who says, that the cause of our not seeing the sun when he goes back, is that he goes back by night. As, at that time, the nations of Syria and the Greeks were somewhat acquainted with Asia and a small part of Europe, and had no notion of the countries which lie to the north of the Euxine Sea and to the south of the Nile, they laid it down as a certainty that the earth was a full third longer than it was wide; consequently the heaven, which touched the earth and embraced it, was also longer than it was wide. Hence came down to us degrees of longitude and latitude, names which we have always retained, although with far more correct ideas than those which originally suggested them. The Book of Job, composed by an ancient Arab who possessed some knowledge of astronomy, since he speaks of the constellations, contains nevertheless the following passage: "Where wert thou, when I laid the foundation of the earth? Who hath taken the dimensions thereof? On what are its foundations fixed? Who hath laid the cornerstone thereof?"