THEO. The best proof you can have of the fact is that every ancient religious, or rather philosophical, cult consisted of an esoteric or secret teaching, and an exoteric (outward public) worship. Furthermore, it is a well-known fact that the MYSTERIES of the ancients comprised with every nation the “greater” (secret) and “Lesser” (public) MYSTERIES—_e.g._, in the celebrated solemnities called the _Eleusinia_, in Greece. From the Hierophants of Samothrace, Egypt, and the initiated Brahmins of the India of old, down to the later Hebrew Rabbis, all preserved, for fear of profanation, their real _bona fide_ beliefs secret. The Jewish Rabbis called their secular religious series the _Mercavah_ (the exterior body), “the vehicle,” or, _the covering which contains the hidden soul_—_i.e._, their highest secret knowledge. Not one of the ancient nations ever imparted through its priests its real philosophical secrets to the masses, but allotted to the latter only the husks. Northern Buddhism has its “greater” and its “lesser” vehicle, known as the _Mahayana_, the esoteric, and the _Hinayana_, the exoteric, Schools. Nor can you blame them for such secrecy; for surely you would not think of feeding your flock of sheep on learned dissertations on botany instead of on grass? Pythagoras called his _Gnosis_ “the knowledge of things that are,” or ἡ γνῶσις τῶν ὄντων, and preserved that knowledge for his pledged disciples only: for those who could digest such mental food and feel satisfied; and he pledged them to silence and secrecy. Occult alphabets and secret ciphers are the development of the old Egyptian _hieratic_ writings, the secret of which was, in the days of old, in the possession only of the Hierogrammatists, or initiated Egyptian priests. Ammonius Saccas, as his biographers tell us, bound his pupils by oath not to divulge _his higher doctrines_ except to those who had already been instructed in preliminary knowledge, and who were also bound by a pledge. Finally, do we not find the same even in early Christianity, among the Gnostics, and even in the teachings of Christ? Did he not speak to the multitudes in parables which had a two-fold meaning, and explain his reasons only to his disciples? “To you,” he says, “it is given to know the mysteries of the kingdom of heaven; but unto them that are without, all these things are done in parables” (Mark iv. 11). “The Essenes of Judea and Carmel made similar distinctions, dividing their adherents into neophytes, brethren, and the _perfect_, or those initiated” (Eclec. Phil.). Examples might be brought from every country to this effect.