Esotericism in Freemasonry refers to the deeper, hidden meanings and teachings that are not immediately apparent to all members. It encompasses the symbolic and philosophical aspects of the craft that are often reserved for those who seek further understanding beyond the surface rituals. As J.D. Buck notes, "the real secrets of Freemasonry lie in its Symbols, and the meaning of the symbols reveals a profound philosophy, and a universal science, that have never been transcended by man".
Moreover, esoteric teachings often draw from ancient wisdom and traditions, suggesting that Freemasonry is a continuation of the mysteries practiced in antiquity. Buck emphasizes that "the distinction between the esoteric and exoteric doctrines... was always preserved among the Greeks". This indicates that Freemasonry, like many ancient traditions, maintains a duality in its teachings, where the outer forms are accessible to all, while the inner truths are reserved for the initiated.
Additionally, the esoteric aspects of Freemasonry are often linked to the study of symbolism, geometry, and the mystical interpretations of its rituals. James C. Stewart highlights that "geometry was of an almost spiritual importance to the operative masons" and that these geometric symbols have traveled through various esoteric traditions to modern Freemasonry.