Mystical Traditions and Secrecy.
by Estéban Trujillo de Gutiérrez
“Significantly, it is in mystical traditions that secrecy is used most extensively.
Mystic traditions ranging from the Hindu and Buddhist guarded Tantric texts, the supposed secret teachings of Sakyamuni, the poetry of the Sufis, to the teachings of kabbalists and Christian mystics all have in common that their doctrines are restricted to initiates, and that their discourses are veiled in a symbolic language, which for uninitiated is often difficult to fully comprehend.
In the gnosticism of late antiquity the very notion of gnosis itself was regarded as a closely guarded secret.”
—-Henrik Bogdan, Western Esotericism and Rituals of Initiation, 2007, pp. 45-6.