On the next two planes, the spiritual - those of wisdom and power, the buddhic and the atmic - goes on the specific evolution of the Initiate, after … - Annie Besant

S. Clement of Alexandria says quite bluntly, after alluding to the Mysteries: "Even now I fear, as it is said, 'to cast the pearls before swine, lest they tread them underfoot, and turn and rend us.' For it is difficult to exhibit the really pure and transparent words respecting the true Light to swinish and untrained hearers." (Clarke's Ante-Nicene Christian Library, Vol. IV. Clement of Alexandria. Stromata, bk. I., ch. xii.)

He proceeded later to Egypt. He had been fully instructed in the secret teachings which were the real fount of life among the Essenes, and was initiated in Egypt as a disciple of that one sublime Lodge from which every great religion has its Founder.

Refusal to believe until proof is given is a rational position; denial of all outside of our own limited experience is absurd.