“To investigate the recondite meaning of these legends and symbols, and to elicit from them the moral and philosophical lessons which they were intended to teach, is to withdraw the veil with which ignorance and indifference seek to conceal the true philosophy of Freemasonry. To study the symbolism of Masonry is the only way to investigate its philosophy. This is the portal of its temple, through which alone we can gain access to the sacellum where its aporrheta are concealed.” This is A 32 part series of The Symbolism Of Freemasonry by Albert G. Mackey.
https://youtube.com/playlist?list=PLrDURG8i62OZsaB2xKd2RAm99Uw6crRjj