(Aramaic: רבן שמעון בר יוחאי, Rabban Shimon bar Yochai) Author of the esteemed book of mysticism, The Zohar.
"The Sepher ha Zohar presumably was written by Simeon ben Jochai, a disciple of Akiba. Rabbi Simeon was sentenced to death about A.D. 161 by Lucius Verus, co-regent of the Emperor Marc Aurelius Antoninus. He escaped with his son and, hiding in a cave, transcribed the manuscript of the Zohar with the assistance of Elias, who appeared to them at intervals. Simeon was twelve years in the cave, during which time he evolved the complicated symbolism of the "Greater Face" and the "Lesser Face." While discoursing with disciples Rabbi Simeon expired, and the "Lamp of Israel" was extinguished. His death and burial were accompanied by many supernatural phenomena. The legend goes on to relate that the secret doctrines of Qabbalism had been in existence since the beginning of the world, but that Rabbi Simeon was the first man permitted to reduce them to writing. Twelve hundred years later the books which he had compiled were discovered and published for the benefit of humanity by Moses de León. The probability is that Moses de León himself compiled the Zohar about A.D. 1305, drawing his material from the unwritten secrets of earlier Jewish mystics." - Manly P. Hall, The Secret Teachings of All Ages