When mythology was invented, most of the gods, if not all of them, were received as symbolical, physical beings, the poets made of them moral agents; and as such they appear in the religions of the people of earlier days. The symbolical meaning would have been lost, if no means had been provided to insure its preservation. The MYSTERIES, it seems, afforded such means. Their great end, therefore, was to preserve the knowledge of the peculiar attributes of those divinities which had been incorparated into the popular religion under new forms; what powers and objects of nature they represented; how these, and how the universe came into being; in a word, cosmogonies, like those contained in the Orphic instructions. But this knowledge, though it was preserved by oral instruction, was perpetuated no less by {27} symbolic representations and usages; which, at least in part, consisted of sacred traditions and fables. "In the sanctuary of Sais," says Herodotus (l.c.), "representations are given by night of the adventures of the goddess; and these are called by the Egyptians _mysteries_; of which, however, I will relate no more. It was thence that these mysteries were introduced into Greece."[25] The temples of India and of Egypt seem to be identical in architecture and in sculpture.[26] Both nations seem to have sprung from the old Assyrian stock.[27] The magi of both countries appear to have had a common origin; and their teachings must have been, therefore, traditionally the same. We may, then, presume that there were three grades in the instructions of these mysteries, by whatever name they may have been called--whether Apprentices, Masters, and Perfect Masters, or otherwise; that they were sacred in their character; and that their symbolic meanings were revealed in these MYSTERIES, and in no other manner, while they were kept a secret from the world at large. But this was not all. They spread, with emigration and commerce, into all then known countries. Their common origin, or at least that of most of them, is still perceptible. CERES had long wandered over the earth, before she was received at Eleusis, and erected there her {28} sanctuary. (Isocrat. Paneg. op., p. 46, ed. Steph., and many other places in Meursii Eleusin., cap. 1.) Her secret service in the Thesmophoria, according to the account of Herodotus (iv. 172), was first introduced by Danaus; who brought it from Egypt to the Peloponnesus.[28] One writer says that mysteries were, among the Greeks, and afterward also among the Romans, secret religious assemblies, which no uninitiated person was permitted to approach. They originated at a very early period. They were designed to interpret those mythological fables and religious rites, the true meaning of which it was thought expedient to conceal from the people. They were perhaps necessary in those times, in which the superstitions, the errors, and the prejudices of the people, could not be openly exposed without danger to the public peace.