It is through the same author, who is in accordance in this respect with all the bards, that we know that this celestial earth was considered by the theologians of the West as the residence of happy souls. They rose and approached it in proportion as their preparation had been complete, but, in the agitation of the whirlwind, many reached the moon that it would not receive. "The moon repelled a great number, and rejected them by its fluctuations, at the moment they reached it; but those that had better success fixed themselves there for good; their soul is like the flame, which, raising itself in the ether of the moon, as fire raises itself on that of the earth receives force and solidity in the same way that red-hot iron does when plunged into the water." They thus traced an analogy between the moon and the earth, which they doubtless carried out to its full development, and made the moon an image of what they knew here, picturing there the lunar fields and brooks and breezes and perfumes. What a charm such a belief must have given to the heavens at night. The moon was the place and visible pledge of immortality. On this account it was placed in high position in their religion; the order of all the festivals was arranged after that which was dedicated to it; its presence was sought in all their ceremonies, and its rays were invoked. The Druids are always therefore represented as having the crescent in their hands. Astronomy and theology being so intimately connected in the spirit of the Druids, we can easily understand that the two studies were brought to the front together in their colleges. From certain points of view we may say that the Druids were nothing more than astronomers. This quality was not less striking to the ancients in them than in the Chaldaeans. The observation of the stars was one of their official functions. Caesar tells us, without entering more into particulars, that they taught many things about _the form and dimensions of the earth, the size and arrangements of the different parts of heaven, and the motions of the stars_, which includes the greater part of the essential problems of celestial geometry, which we see they had already proposed to themselves. We can see the same fact in the magnificent passage of Taliesin. "I will ask the bards," he says in his _Hymn of the World_, "and why will not the bards answer me? I will ask of them what sustains the earth, since having no support it does not fall? or if it falls which way does it go? But what can serve for its support? Is the world a great traveller? Although it moves without ceasing, it remains tranquil in its route; and how admirable is that route, seeing that the world moves not in any direction." This suffices to show that the ideas of the Druids on material phenomena were not at all inferior to their conceptions of the destiny of the soul, and that they had scientific views of quite another origin from the Alexandrian Greeks, the Latins,