The Secret Teaching Of All Ages - Paperbackby Manly P. Hall (Author) "The Secret Teachings of All Ages" is a book written by Manly P. Hall, a Canadian born author and mystic. It explores various esoteric and occult subjects, delving into the symbolism, mythology, and philosophies found in ancient and modern civilizations. "The Secret Teachings of All Ages" is a comprehensive work that covers a wide range of topics, including ancient civilizations, secret societies, symbolism, astrology,