Aleister Crowley considered AHA! "my greatest magical poem". This profoundly esoteric work highlights the two central experiences of the Path of the Wise -- the Knowledge and Conversation of the Holy Guardian Angel and the Crossing of the Abyss. It also marks Crowley's final acceptance of the mysteries of "The Book of the Law", and offers his overview of Initiation and the techniques by which Spiritual Enlightenment may be achieved. This expanded edition features a new analysis by esoteric teacher and author, J Daniel Gunther, who provides Qabalistic insights into the poem's extraordinary depth. James Wasserman, a well-known writer and student of Crowley, has expanded upon the myth of Marsyas and Olympas, while placing AHA! within the context of Crowley's overall life and teaching. Frater Achad, one of Crowley's most important early disciples, wrote an excellent but little-known commentary on AHA! that is included here. This volume also features an essay by Dr Israel Regardie, a primary Crowley biographer and spokesman.