The Deeper Symbolism of Freemasonry from The Meaning of Masonry by Walter Leslie Wilmshurst.

“From that source Christianity itself came into the world. From them originated the great school of Kabalism that marvellous system of secret, oral tradition of the Hebrews, a strong element of which has been introduced into our Masonic system. From them too, also issued many fraternities and orders, such for instance, as the great orders of Chivalry and of the Rosicrucians, and the school of spiritual alchemy. Lastly, from them too also issued, in the seventeen century, modern speculative Freemasonry.” [via]

Consider also:

  1. “These Mysteries were formerly taught, we are told, ‘on the highest hills and in the lowest valleys,’ which is merely a figure of speech for saying, first, that they have been taught in circumstances of the greatest seclusion and secrecy, and secondly, that they have been taught in both advanced and simple forms according to the understanding of their disciples.”
  2. “What is extremely ancient in Freemasonry is the spiritual doctrine concealed within the architectural phraseology; for this doctrine is an elementary form of the doctrine that has been taught in all ages, no matter in what garb it has been expressed.”
  3. “Hence every Candidate upon admission finds himself, in a state of darkness, in the West of the Lodge. Thereby he is repeating symbolically the incident of his actual birth into this world, which he entered as a blind and helpless babe, and through which in his early years, not knowing whither he was going, after many stumbling and irregular steps, after many deviations from the true path and after many tribulations and adversities incident to human life, he may at length ascend, purified and chastened by experience, to larger life in the eternal East.”
  4. “We are told seven or more years was the normal period, though less sufficed in worthy cases. The most severe tests of discipline, of purity, of self-balance were required before a neophyte was permitted to pass forward, and a reminiscence of these tests of fitness is preserved in our own working by the conducting of the candidate to the two wardens, and submitting him to a merely formal trial of efficiency.”
  5. “There are members of the Craft to whom it is familiar, and who in due time may feel justified in gradually making public at any rate some portion of what is known in interior circles. But ere that time comes, and that the Craft itself may the better appreciate what can be told, it is desirable, nay even necessary, that its own members should make some effort to realize the meaning of their own institution and should display symptoms of earnest desire to treat it less as a system of archaic and perfunctory rites, and more as a vital reality capable of entering into and dominating their lives; less as a merely pleasant social order, and more as a sacred and serious method of initiation into the profoundest truths of life.”