Aha : Being Liber CCXLII

Crowley described AHA! as "An exposition in poetic language of the ways of attainment and the results obtained".

This profoundly esoteric work particularly highlights the two central experiences of the Path, 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 and teachings of "The Book of the Law".

This new edition features a previously unpublished and invaluable Commentary by Frater Achad, one of Crowley's most important early students, which indicates a method by which the mystic depths of AHA! may be further explored. It includes an elaborate Commentary by Israel Regardie, a primary Crowley biographer and spokesman.

An Afterword by Crowley scholar James Wasserman places the work within the context of Crowley's overall life and teaching.