THE SECRET TEACHINGS OF ALL AGES (Pt. 1 of 4) - Manly P. Hall - full esoteric occult audiobook. Like no other book of the twentieth century, Manly P. Hall's legendary The Secret Teachings of All Ages is a codex to the ancient occult and esoteric traditions of the world. Students of hidden wisdom, ancient symbols, and arcane practices treasure Hall's magnum opus above all other works.