Why it a secret society

Freemasonry is categorized as a secret society primarily because its modes of recognition and its ritual ceremonies are kept private, even though its general philosophy, moral tenets, and creed are entirely open to the world 1. Mackey emphasizes that secrecy regarding these specific methods of identification and instruction is essential to the Craft's identity and constitutes a fundamental Landmark, arguing that divesting the fraternity of its private character would cause it to lose its identity entirely 1.

Historically, this compulsory privacy drew intense opposition from ecclesiastical authorities. Pope Clement XII in 1738 and the Associate Synod of Seceders of Scotland in 1757 both condemned the fraternity for requiring candidates to take an oath of secrecy regarding matters not yet revealed to them 1.

Scholars within the Craft interpret the purpose and extent of this secrecy differently:

Friedrichs contends that outside of the private modes of recognition, there is virtually no secrecy in the lodge, as the true work of Masonry consists of open moral instruction, fraternal fellowship, and charity 3.

Newton views the secret structure of the fraternity as an anthropological survival of the primitive "Men's House," where tribal initiates were bound by vows of secrecy and given a new language of signs, grips, and tokens upon reaching maturity 2.

Wilmshurst offers a mystical reading, arguing that Freemasonry maintains a secret character because it inherits the function of the ancient Mysteries, which veiled esoteric spiritual truths from the uninitiated to protect those teachings from profanation 4.