That's the one thing I like about the GD. It came so late that it had pretty much all the material in the British library to pick its curriculum from. Yet prominent members of the order such as Aaron Leitch still maintain that the grimoire procedures hold all the power because they are the way the spirits and angels want to be called. I humbly disagree as practitioners have found out, all one needs is the name of entity, along with its sigil and a containment structure such a table on an altar in accordance with Agrippa's 3 books of philosophy much of which is already within the GD.
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