2018 Reprint of 1947 Second Edition. Full facsimile of the original edition, not reproduced with Optical Recognition software. Profusely illustrated with diagrams by Howard W. Wookey. Complete in itself, this volume originated as a commentary and expansion of Manly P. Hall's masterpiece of symbolic philosophy, The Secret Teachings of All Ages. In Lectures on Ancient Philosophy, Manly P. Hall expands on the philosophical, metaphysical, and cosmological themes introduced in his classic work, The Secret Teachings of All Ages. Hall wrote this volume as a reader's companion to his earlier work, intending it for those wishing to delve more deeply into the esoteric philosophies and ideas that animated the Secret Teachings. In this edition particular attention is paid to Neoplatonism, ancient Christianity, Rosicrucian and Freemasonic traditions, ancient mysteries, pagan rites and symbols, and Pythagorean mathematics.