Manly P. Hall. Here are the last-minute materials that arrived too late to the printer to be included in the "Secret Teaching of All Ages" Masonic Hermetic Cabbalistic & Rosicrucian Symbolic Philosophy. In these previously unpublished 20 lectures given by Manly P. Hall in 1928, we learn from the great philosopher how to further our understanding. In his own words, Manly Hall tells us how he intended individuals to approach, read and study the information within his great book.