聖守護天使
Since the operation described in "Abramelin" is so complex and requires time and resources not available to most people, Crowley wanted to provide a more accessible method. While at the Abbey of Thelema in Italy, he wrote "Liber Samekh" based on the Bornless Ritual, a ritual designed as an example of how one may attain the Knowledge and Conversation with one’s Holy Guardian Angel. In his notes to this ritual, Crowley sums up the key to success: “INVOKE OFTEN.”