“The ancients did not believe that spirituality made men either righteous or rational, but rather that righteousness and rationality made men spiritual. The Mysteries taught that spiritual illumination was attained only by bringing the lower nature up to a certain standard of efficiency and purity. The Mysteries were therefore established for the purpose of unfolding the nature of man according to certain fixed rules which, when faithfully followed, elevated the human consciousness to a point where it was capable of cognizing its own constitution and the true purpose of existence.”
— Manly P. Hall (The Secret Teachings of all Ages)